Interactive system and method using tracking device

Abstract

To provide an interactive system and method using a tracking device.SOLUTION: A wearable device includes a radio frequency identification (RFID) tag having a memory for storing identification information. The wearable device has a power harvesting circuit configured to use power from electromagnetic radiation. Further, the wearable device has a sensor coupled to the power harvesting circuit and configured to monitor a state of the wearable device using the power. Further, the wearable device has a microcontroller coupled to the sensor and configured to write data indicative of the state into the memory of the RFID tag. The RFID tag is configured to transmit the identification information and the data in response to reception of electromagnetic radiation from an RFID reader.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] TECHNICAL FIELD The present disclosure relates generally to interactive systems and methods. More specifically, embodiments of the present disclosure relate to interactive systems and methods that utilize wearable devices to track guest interactions at an amusement park.

[0002] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to and the benefit of U.S. Provisional Application No. 62 / 617,510, entitled "INTERACTIVE SYSTEMS AND METHODS WITH TRACKING DEVICES," filed January 15, 2018, which is hereby incorporated by reference in its entirety for all purposes. [Background technology]

[0003] Amusement and / or theme parks may include a variety of entertainment attractions. Some existing attractions may provide guests with an immersive or interactive experience. For example, guests may visit areas with a variety of features, such as audio, video, and special effects. Due to the increasing sophistication and complexity of modern attractions and the associated increased expectations among amusement and / or theme park guests, there is a need for improved and more creative attractions, including attractions that provide a more interactive and personalized experience. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Provisional Application No. 62 / 617,510 Summary of the Invention [Means for solving the problem]

[0005] Certain embodiments falling within the scope of the initially claimed invention are summarized below. These embodiments are not intended to limit the scope of the disclosure, but merely to provide a brief overview of certain embodiments of the disclosure. Indeed, the disclosure may encompass a variety of forms that may be similar to or different from the embodiments set forth below.

[0006] In one embodiment, the wearable device includes a radio-frequency identification (RFID) tag having a memory that stores identification information. The wearable device also includes a power harvesting circuit configured to harness power from electromagnetic radiation. The wearable device further includes a sensor coupled to the power harvesting circuit and configured to utilize the power and monitor a status of the wearable device. The wearable device further includes a microcontroller coupled to the sensor and configured to write data indicative of the status to a memory of the RFID tag, the RFID tag configured to transmit the identification information and data in response to receiving the electromagnetic radiation from the RFID reader.

[0007] In one embodiment, the system includes a wearable device having a radio frequency identification (RFID) tag. The RFID tag has a memory that stores identification information, and the RFID tag is configured to transmit the identification information to the RFID reader in response to receiving electromagnetic radiation from the RFID reader. The wearable device further includes a tracking device supported by the wearable device and configured to facilitate tracking a location of the wearable device. The wearable device further includes a power harvesting circuit supported by the wearable device and configured to harvest power from the received electromagnetic radiation, the harvested power being utilized to transmit the identification information and to operate the tracking device. The system further includes a processor configured to receive the identification information from the RFID reader and a signal indicative of a location of the wearable device, the processor configured to detect an interaction between the wearable device and an element of the attraction based on the received identification information and the received signal.

[0008] In one embodiment, the method includes transmitting electromagnetic radiation from a radio frequency identification (RFID) reader. The method further includes harvesting power from the electromagnetic radiation using power harvesting circuitry of the wearable device. The method further includes utilizing the harvested power to operate a sensor carried by the wearable device to monitor a location of the wearable device. The method further includes utilizing the harvested power to operate a microcontroller carried by the wearable device to write data indicative of the monitored location to a memory of an RFID tag carried by the wearable device. The method then includes transmitting the identification information and data from the memory of the RFID tag to the RFID reader in response to receiving the electromagnetic radiation from the RFID reader.

[0009] These and other features, aspects, and advantages of the present disclosure will become better understood from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like elements throughout. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic diagram of an interactive system according to one embodiment of the present disclosure. [Diagram 2] FIG. 2 illustrates communication between a reader system and multiple wearable devices that can be used in the interactive system of FIG. 1 according to one embodiment of the present disclosure. [Diagram 3] FIG. 2 illustrates communication between a reader system and multiple wearable devices near a target, which may be used in the interactive system of FIG. 1, according to one embodiment of the present disclosure. [Figure 4] FIG. 2 illustrates communication between a reader system and multiple wearable devices having sensors that can be used in the interactive system of FIG. 1 according to one embodiment of the present disclosure. [Diagram 5] 2 is a flow diagram of a method of operating a wearable device having a sensor that can be used in the interaction system of FIG. 1 according to one embodiment of the present disclosure. [Figure 6] 2 is a flow diagram of a method of operating a wearable device having illuminators that can be used in the interaction system of FIG. 1 according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] One or more specific embodiments of the present disclosure are described below. In order to provide a concise description of these embodiments, not all of the features of an actual implementation may be described herein. It will be appreciated that in developing any such actual implementation, as with any engineering or design project, numerous implementation-specific decisions must be made to achieve the developer's particular goals, including compliance with system-related and business-related constraints that may vary from implementation to implementation. It will be further appreciated that such a development effort may be complex and time-consuming, but is nevertheless a routine exercise in design, engineering and manufacture for those of ordinary skill in the art having the benefit of this disclosure.

[0012] Amusement parks feature a wide variety of entertainment, such as rides, performance shows, and games. The various types of entertainment can include features that enhance a guest's experience at the amusement park. For example, an attraction can include a game having a touch screen display that detects a guest's touch with a rendered image presented on a display screen. However, some interactive systems can provide a suboptimal experience due to poor or unreliable detection of a guest's interaction (e.g., recognition by the interactive system) with an interactive element (e.g., a rendered image presented on a display screen). It is further understood that it is desirable for an interactive system to determine the identity of a guest who has interacted with an interactive element, and therefore to accurately and efficiently track scores or other game statistics for each guest.

[0013] Accordingly, the present disclosure relates to systems and methods utilizing wearable devices (e.g., wearable by one or more guests) to track guest interactions with interactive elements. More specifically, the present disclosure relates to an interactive system including one or more radio frequency identification (RFID) readers and a plurality of wearable devices, each having one or more RFID tags and one or more tracking devices (e.g., light emitters and / or sensors). The tracking devices can be part of a tracking system that includes one or more components configured to generate signals indicative of guest interactions with interactive elements. In one embodiment, certain tracking devices (e.g., light emitting diodes (LEDs)) of the wearable devices can also provide a visual indication of successful interaction with interactive elements of the attraction to the guest wearing the wearable device.

[0014] As used below, the term "user" may refer to a user of an interactive system; in an amusement park, the user may be a guest. As an example, the user may wear or carry a wearable device having one or more tracking devices as he moves through an attraction. The attraction may have various interactive elements, which may be any of a variety of images or objects (e.g., drawn images, virtual elements, or graphic elements provided on a display screen; physical objects or targets; costumes). To experience the attraction, the user may interact with the interactive elements, for example, by touching a physical target or approaching a costume.

[0015] In one embodiment, the tracking device may be a sensor (e.g., a motion sensor such as an accelerometer) that generates a signal indicative of a state (e.g., position or movement) of the wearable device. A microcontroller of the wearable device may be coupled to the sensor and may write data indicative of the state (e.g., based on the signal) to a memory of an RFID tag of the wearable device. As discussed in more detail below, the data may be transferred from the RFID tag to an RFID reader that may be located within the attraction and / or near certain interactive elements. A computing system communicatively coupled to the RFID reader may process the data, e.g., determine that a user has performed a particular motion (e.g., waving or sticking out a hand) and / or assign a score to the user.

[0016] In one embodiment, the tracking device may be an LED, and light emitted by the LED may be detected by a detector (e.g., a photodetector or a camera) communicatively coupled to a computing system. The computing system may receive and process signals from the detector to, for example, determine the location of the wearable device, determine that the user has performed a particular movement (e.g., waving or sticking out a hand), and / or assign a score to the user. As discussed in more detail below, communication between one or more RFID readers in the attraction and an RFID tag on the wearable device may illuminate an LED, thereby providing feedback to the user that communication between one or more RFID readers and an RFID tag has occurred. Since one or more RFID readers may be positioned at the entrance to the attraction or near various interactive elements, illumination of the LED may also indicate to the user, for example, that the interactive system has detected the user in the attraction and / or detected the user's interaction with an interactive element.

[0017] Thus, the tracking device may enable the interactive system to track the user's movements (e.g., target touching gestures, dancing gestures, waving gestures, sticking out gestures, or various other gestures), which may further enable the interactive system to track the user's progress (e.g., game statistics) as the user moves through the attraction. For example, the interactive system may detect and track the number of targets the user touches and / or the number of costumed characters the user encounters.

[0018] Turning now to the drawings, FIG. 1 is a schematic diagram of an interactive system 10 including a reader system 12 (e.g., a radio frequency identification (RFID) reader system) and a wearable device 14. In one embodiment, the wearable device 14 is a wearable or portable device, such as a bracelet, necklace, charm, pin, or toy, that a user can wear or carry as they move through the attraction. As discussed in more detail below, the reader system 12 can communicate with the wearable device 14 by electromagnetic radiation, which allows tracking of the user's progress through the attraction (e.g., rides completed, areas visited, interactive elements touched, costumes encountered, number of virtual wins won). This communication can also enable the wearable device 14 to provide feedback and / or various interactions to the user indicative of progress through feedback responses (e.g., lights) output by the wearable device 14.

[0019] In one embodiment, the reader system 12 includes a first reader 16, a second reader 18, and a detector 20 (e.g., a photodetector or camera) communicatively coupled to a computing system 22 (having a memory 24 and a processor 26) that accesses information stored in one or more databases 28 (e.g., a cloud-based storage system). In general, the first reader 16 and the second reader 18 transmit electromagnetic radiation (e.g., signals) to the wearable device 14. In one embodiment, the first reader 16 transmits a signal 30 at one frequency (e.g., range) and the second reader 18 transmits a signal 32 at another frequency (e.g., range) different from the first frequency. In addition to transmitting signals 30, 32, the first reader 16 and the second reader 18 can receive signals, such as signals from the wearable device 14 and signals from the computing system 22. In one embodiment, the computing system 22 instructs the readers (e.g., the first reader 16 and the second reader 18) to send signals 30, 32 to the wearable device 14 based on information stored in data encoded in one or more databases 28. It should be appreciated that the first reader 16 and the second reader 18 may be transceivers capable of both transmitting and receiving signals. In one embodiment, the detector 20 detects light emitted from the wearable device 14, and this detection may be used to detect or verify, for example, a successful interaction.

[0020] As illustrated in FIG. 1 , one embodiment of the wearable device 14 includes a first RFID tag 34, a second RFID tag 36, a microcontroller 38, a feedback device 39 (e.g., LED, speaker, tactile means), one or more tracking devices 40 (e.g., LED or sensor), and a power supply circuit 42, which cooperate to enable the wearable device 14 of the interactive system 10 to function as disclosed. In one embodiment, the feedback device 39 can also operate as the tracking device 40. The first RFID tag 34 and the second RFID tag 36 each include an antenna 46 for transmitting and receiving signals, a memory 48 for storing information (e.g., a unique identification code), a microchip 50, and an integrated circuit 52 for powering the microchip 50. In addition, the integrated circuit 52 powers the power supply circuit 42, which provides power to the microcontroller 38. In one embodiment, the power supply circuit 36 ​​can include an energy storage device (e.g., a capacitor, a supercapacitor, a battery) configured to store power. As shown, the microcontroller 38 of the wearable device 14 includes a memory 44 and a processor 45. The memory 44 stores computer readable instructions that are executed by the processor 45 to control the operation of the microcontroller 38 and other components of the wearable device 14. In one embodiment, the microcontroller 38 provides a signal to the feedback device 39 causing the feedback device 39 to provide a feedback response that informs the user that successful communication between the wearable device 14 and the reader system 12 has occurred.

[0021] In one embodiment, the wearable device 14 may include a tracking device 40. In general, the tracking device 40 may be used to detect or verify user interaction with an interactive element of an attraction. To facilitate a review of the various tracking devices 40 that may be used in the wearable device 14, the wearable device 14 of FIG. 1 includes two different types of tracking devices 40 (e.g., LEDs 54a, 54b and a sensor 56), but it should be understood that any number (e.g., one, two, three, four, or more) and different types of tracking devices 40 may be used in the wearable device 14. As shown, one tracking device 40 includes one or more LEDs 54a, 54b, and one tracking device 40 includes one or more sensors 56. The LEDs 54a, 54b and / or the sensor 56 may receive control signals from the microcontroller 38 and may also receive power from the power supply circuit 42. The LEDs 54a, 54b emit light in response to a control signal from the microcontroller 38, and the emitted light may then be detected by the detector 20. The sensor 56 may include, for example, an accelerometer, a gyrometer, a pressure sensor, a sound sensor, or a photodetector.

[0022] Generally, the antenna 46 of the first RFID tag 34 is designed to receive the signal 24 from the first reader 16, and the antenna 46 of the second RFID tag 36 is designed to receive the signal 26 from the second reader 18 of the reader system 12. In one embodiment, the microcontroller 38 identifies an interaction between the tag 34, 36 and the reader 16, 18 and sends a signal (e.g., a control signal) that causes one or more of the LEDs 54 to light up. In one embodiment, the LEDs 54 can emit visible light to provide feedback to the user. Thus, in addition to operating as a tracking device 40 to enable the computing system 22 to track the user's location, the LEDs 54 can also operate as a feedback device 29 to provide feedback to the user. In one embodiment, the wearable device 14 of the interactive system 10 can include additional or alternative feedback devices 39, such as an audio device configured to emit sound or a haptic means configured to provide a haptic output (e.g., vibration). Light emitted by the LED 54 may be detected by the detector 20, which may provide a signal indicative of the detected light to the computing system 22. Backscatter indicative of a unique identification code may also be emitted by the first RFID tag 34 and / or the second RFID tag 36, which may be utilized by the computing system 22 to identify the user to facilitate tracking the user's progress (e.g., game statistics) as the user moves through the attraction.

[0023] More specifically, the first reader 16 of the reader system 12 continuously transmits a signal 30. The antenna 46 of the first RFID tag 34 is configured to receive electromagnetic radiation (e.g., signal 30) from the first reader 16 as well as transmit a signal 51 to the first reader 16. The integrated circuit 44 converts the electromagnetic radiation received by the antenna 46 into electricity and powers the microchip 50, which generates a backscatter (e.g., signal 51). The backscatter includes information (e.g., a unique identification code) stored in the memory 48 of the first RFID tag 34. The backscatter (e.g., signal 51) is received by the first reader 16, which can send the signal to the computing system 22. The computing system 22 may process the signal to determine an identity of a user associated with the wearable device 14 (e.g., a user may register the wearable device 14 prior to experiencing an attraction to associate the wearable device 14 with the user) and / or to update information about the wearable device 14 (e.g., game statistics) in one or more databases 28. In this manner, the interaction system 10 may detect the presence of a user within the attraction and / or track the user's progress (e.g., game statistics) as the user moves through the attraction.

[0024] Additionally, when power is provided to the microcontroller 38, the processor 45 of the microcontroller 38 may also receive and process a signal from the first RFID tag 34 indicating that the signal 30 from the first reader 16 has been received at the first RFID tag 34. The processor 45 of the microcontroller 38 may then execute instructions stored on the memory 44 of the microcontroller 38 to illuminate one or more of the LEDs 54a, 54b to facilitate tracking and / or provide feedback to the user. In one embodiment, the microcontroller 38 may be programmed to provide a particular type of illumination (e.g., number of lights, color, blinking pattern, duration) in response to a signal indicating that the signal 30 from the first reader 16 has been received at the first RFID tag 34. For example, when the first RFID tag 34 receives the signal 30 from the first RFID reader 16, the microcontroller 38 may illuminate the first LED 54a. In one embodiment, the signal 30 transmitted by the first reader 16 is an ultra-high frequency (UHF) signal (e.g., having a frequency between about 300 megahertz and 3 gigahertz), such that the first RFID tag 34 can receive the signal 51 from the first reader 16 when located at a relatively long distance from the first reader 16 (e.g., up to about 3 meters, 4 meters, 5 meters, 6 meters, 7 meters, 8 meters, or more).

[0025] Additionally, the second reader 18 may continuously transmit a signal 32. The antenna 46 of the second RFID tag 36 is configured to receive electromagnetic radiation (e.g., signal 32) from the second reader 18. The integrated circuit 44 converts the radiation received by the antenna 46 into electricity to power the microchip 50, which generates a backscatter (e.g., signal 52). The backscatter includes information (e.g., a unique identification code) stored in the memory 46 of the second RFID tag 36. It should be appreciated that in some embodiments, the information stored in the respective memories 40 of the first and second RFID tags 34, 36 may be linked (e.g., the backscatter generated in response to receiving the signal 32 at the second RFID tag 36 may include information stored in the memory 46 of the first RFID tag 34), or the first and second RFID tags 34, 36 may share a single memory 46 (e.g., a dual RFID tag capable of receiving signals at different frequencies). The backscatter (e.g., signal 52) may be received by the second reader 18, which may send a signal to the computing system 22. The computing system 22 may process the signal to determine an identity of a user associated with the wearable device 14 and / or update information about the wearable device 14 (e.g., game statistics) in one or more databases 28. A first RFID reader 16 may be associated with a particular area (e.g., a room) of the attraction and a second RFID reader 18 may be associated with a particular interactive element (e.g., a physical or virtual target) of the attraction, such that the computing system 22 can track both the user's general location and the user's interactions with the interactive elements. In this manner, the interactive system 10 can track the user's progress (e.g., general location and / or game statistics) as the user moves through the attraction.

[0026] Additionally, when power is provided to the microcontroller 38, the processor 45 of the microcontroller 38 may also receive and process a signal from the second RFID tag 36 indicating that a signal 30 from the second reader 18 has been received at the second RFID tag 36. The processor 45 of the microcontroller 38 may then execute instructions stored on the memory 44 of the microcontroller 38 to illuminate one or more of the LEDs 54a, 54b to facilitate tracking and / or provide feedback to the user. In one embodiment, the microcontroller 38 may be programmed to provide a particular type of illumination (e.g., number of lights, color, blinking pattern, length of time) in response to a signal indicating that a signal 32 from the second reader 18 has been received at the second RFID tag 36. For example, when the second RFID tag 36 receives the signal 32 from the second RFID reader 18, the microcontroller 38 may illuminate the second LED 54b. In one embodiment, the signal 32 transmitted by the second reader 16 is a Near Field Communication (NFC) signal (e.g., having a frequency between about 10 megahertz and 20 megahertz). Thus, the second RFID tag 36 can receive the signal 32 from the second reader 18 when it is within a relatively short distance (e.g., about 1 centimeter, 2 centimeters, 3 centimeters, 4 centimeters, or 5 centimeters) of the first reader 16. Because the first RFID reader 16 can be associated with a particular area (e.g., a room) of the attraction and the second RFID reader 18 can be associated with a particular interactive element (e.g., a target) of the attraction, illumination of the LED 54 on the wearable device 14 can enable precise tracking and / or multiple types of feedback to the user.For example, illumination of a first LED 54a in response to receiving a signal 30 from a first RFID reader 16 may notify a user that the interactive system 10 has detected the user within a particular area of ​​the attraction, and illumination of a second LED 54b in response to receiving a signal 32 from a second RFID reader 18 may notify a user that the interactive system 10 has detected the user interacting with a particular interactive element. As discussed in more detail below, detection of light from the LEDs 54a, 54b by the detector 20 may provide additional data (e.g., in addition to the data received via the RFID readers 16, 18) to enable the computing system 22 to determine that a user is within a particular area of ​​the attraction or has interacted with an interactive element.

[0027] Generally, the second reader 18 operates similarly to the first reader 16, except that the first reader 16 communicates with the first RFID tag 34 (and not with the second RFID tag 36), whereas the second reader 18 communicates with the second RFID tag 36 (and not with the first RFID tag 34). The wearable device 14 may include at least two RFID tags 28, 30, each configured to communicate with a respective reader 16, 18 that transmits signals 30, 32 that propagate different distances. The first RFID tag 34 and first reader 16, which communicate over a relatively long distance, allow tracking of the general location of the wearable device 14 and charging the wearable device 14, whereas the second RFID tag 36 and second reader 18, which communicate over a relatively short distance, allow monitoring of interactions based on contact (or proximity) between a user and interactive elements within the attraction. However, it should be understood that the second RFID tag 36 can be used to charge the wearable device 14.

[0028] In one embodiment, the interactive system 10 may include multiple first readers 16 at various locations within the attraction. As the user moves through the attraction, the user's location in the database 28 is updated based on which first reader 16 is currently in communication with the wearable device 14. In one embodiment, feedback may be provided to the user based on each interaction with each of the first readers 16. For example, one first reader 16 may be located at the entrance of the attraction and another first reader 16 may be located within a room or area of ​​the attraction. In this case, the wearable device 14 may provide feedback (e.g., illumination of the first LED 54a) when the user enters the attraction, thereby informing the user that the user has been detected by the interactive system 10. Then, when the user enters the room or area, the wearable device 14 may provide another feedback (e.g., the same feedback or a different feedback, such as illumination of the second LED 54b) to inform the user that the user has been detected by the interactive system 10 as being in a new area. Additionally, one or more LEDs 54 may be used in conjunction with detector 20 to provide user tracking.

[0029] In one embodiment, one or more first readers 16 and one or more second readers 18 can cooperate to improve a user's immersive experience. For example, a user can enter an area that includes one or more first readers 16. The area can include one or more targets, each associated with or near one or more second readers 18. As discussed above, once the wearable device 14 is within range (e.g., a relatively long range) of one first reader 16 that is within the area, the wearable device 14 communicates with the one first reader 16, the database 28 is updated, and the wearable device 14 can provide feedback to the user that the user has been detected within the area. Additionally, when the wearable device 14 is within range (e.g., a relatively short range) of one of the second readers 18 (e.g., due to the user hitting, touching, or walking by a target associated with the one of the second readers 18), the wearable device 14 communicates with the second reader 18, the database 28 is updated, and the wearable device 14 can provide feedback to the user that the user has successfully interacted with the target (e.g., a score has been assigned). Thus, communication between the wearable device 14 and the first reader 16 can provide relatively long range tracking of the user throughout the amusement park (e.g., identifying that the user is in a general location defined by the range of the first reader 16). Furthermore, communication between the wearable device 14 and the second reader 18 can provide relatively short range tracking. In one embodiment, the detector 20 may be positioned in various parts of the attraction, such as near the interactive elements and / or the second reader 18, to detect light emitted by the LED 54 in response to communication between the second reader 18 and the second RFID tag 36.

[0030] In one embodiment, the computing system 22 may award a score to the user if (e.g., only if) the detector 20 detects light emitted by the LED 54 of the wearable device 14, as such detection may indicate that the user has properly positioned his / her wearable device 14 relative to the interactive element. In one embodiment, the computing system 22 may award a score to the user if (e.g., only if) the detector 20 detects that the wearable device 14 worn by the user is in motion (e.g., the user is waving or hitting a target) during (or immediately before or after) an interaction or communication between the second reader 18 and the second RFID tag 36 of the wearable device 14. In one embodiment, the detector 20 may detect a characteristic (e.g., color, wavelength, blinking pattern) of the LED 54 of the tracking device 40. The characteristic of the LED 54 may be associated with one wearable device 14 or a group of wearable devices 14. Thus, detection of the characteristic can be used by computing system 22 to determine or verify the identity of a guest who has completed an interaction with an interactive element. In this manner, when detector 20 detects light, light indicative of movement, or light having the characteristic, computing system 22 can award points to the user based on successful interaction as indicated by both the communication between wearable device 14 and second reader 18 and the detection of light emitted by LED 54 at detector 20.

[0031] As discussed herein, in one embodiment, the tracking device 40 may include a sensor 56. The sensor 56 may be a gyrometer, an accelerometer, a pressure sensor, a light sensor, or an acoustic sensor, and the microcontroller 38 of the wearable device may provide control signals and / or power to operate the sensor 56. In general operation, the sensor 56 may detect a condition (e.g., movement, position, sound, pressure, or light) that indicates that a user is interacting with an interactive element of the attraction. For example, when the sensor 56 is an accelerometer, the sensor 56 may detect a movement of the wearable device 14 by the user, such as sticking out a hand, dancing, or various other gestures. When the sensor 56 is a light sensor, the sensor 56 may detect the presence or absence of light. The microcontroller 38 may receive data from the sensor 56 and write the data to the memory 48 of one or more of the RFID tags 34, 36. The data is transmitted (through backscatter) by the antenna 46 of one or more RFID tags 34, 36 and can be read by the respective readers 16, 18. Based on the data received by the readers 16, 18, the computer system 22 then updates the database 28 and awards points to the users.

[0032] As described above, in one embodiment, the antenna 46 of the first RFID tag 34 can only receive UHF waves, while the antenna 46 of the second RFID tag 36 can only receive NFC waves. For example, the first RFID tag 34 can only communicate (e.g., transmit or receive) using UHF waves, and the second RFID tag 36 can only communicate using NFC waves. Because UHF signals propagate over longer distances, the first RFID tag 34 can receive UHF signals emitted by the first reader 16 frequently or continuously as the user moves through the attraction, but the second RFID tag 36 can receive NFC signals emitted by the second reader 18 only when the user positions the wearable device 14 near the second reader 18. Thus, in one embodiment, the UHF signals can be used to power or charge the wearable device 14 (e.g., by drawing power through the integrated circuit 52 and the power supply circuit 42). However, NFC signals can also be used to power or charge the wearable device 14 in a similar manner.

[0033] It should be appreciated that the interactive system 10 can track multiple users and / or provide feedback on multiple wearable devices 14. For example, multiple users can each wear a respective wearable device 14 configured to communicate with multiple first and second readers 16, 18 located at various locations within the attraction. It should also be appreciated that in one embodiment, to facilitate the techniques disclosed herein, the wearable device 14 of the interactive system 10 can include a single RFID tag (e.g., a dual frequency RFID tag) capable of communicating with signals at a first frequency (e.g., a frequency range) and signals at a second frequency (e.g., another frequency range). While certain examples provided herein include multiple types of RFID readers 16, 18 and RFID tags 34, 36 to facilitate discussion of the various components that may be utilized in the interactive system 10, it should be understood that the wearable device 14 may include only one RFID tag (e.g., only the first RFID tag 34 or only the second RFID tag 36) and the reader system 12 may include only one type of RFID reader (e.g., only one or more first RFID readers 16 configured to emit electromagnetic radiation in one frequency range or only one or more second RFID readers 18 configured to emit electromagnetic radiation in one frequency range). Such a configuration may result in illumination of LEDs 54 to facilitate tracking and / or feedback as a user moves through the attraction and / or such a configuration may enable tracking using sensors 56.

[0034] 2 illustrates a first user 60a wearing a first wearable device 14a and a second user 60b wearing a second wearable device 14b. The illustrated portion of the interactive system 10 includes two second readers 18a, 18b, a first reader 16, and a detector 20, all communicatively coupled to a computing system 22. As shown, the first reader 16 transmits a signal 30 that can be received by the wearable devices 14a, 14b worn by the users 60a, 60b. Each second reader 18a, 18b transmits a signal 32a, 32b within a respective zone 62a, 62b.

[0035] In one embodiment, the second readers 18a, 18b have a relatively short communication range and therefore communicate with the wearable devices 14a, 14b when the users 60a, 60b come into physical contact with targets 64a, 64b in the vicinity of the second readers 18a, 18b or when the wearable devices 14a, 14b are otherwise brought into the areas 62a, 62b. Additionally, the first readers 16 have a relatively long communication range and therefore communicate continuously with the wearable devices 14a, 14b through electromagnetic radiation.

[0036] Successful communication between the wearable device 14a, 14b and the second reader 18a, 18b may result in illumination of one or more LEDs 54a, 54b of the wearable device 14a, 14b. When the LEDs 54a, 54b of the wearable device 14a, 14b are illuminated, the detector 20 provides verification that a correct or desired interaction has occurred between the wearable device 14a, 14b and the second reader 18a, 18b (or between a user and a particular target 64). In one embodiment, the verification may include determining which user 60a, 60b has interacted with the second reader 18a, 18b. For example, the illumination characteristics of the LEDs 54a, 54b of the wearable device 14a, 14b may be specific to each wearable device 14a, 14b. For example, the LED 54a of the first wearable device 14a may be of one color and the LED 54b of the second wearable device 14b may be of another color. Additionally, the LEDs 54 of the wearable devices 14a, 14b may blink at unique rates or have various other differentiating characteristics detectable by the detector 20, such that the processor 26 of the computing system 22 may determine or receive additional input indicative of which wearable device 14a, 14b is in the vicinity of the target 64a, 64b.

[0037] More specifically, a first user 60a wearing a wearable device 14a having one or more LEDs 54a is located near a target 64a. As discussed above, the wearable device 14a receives a signal 30 from the first reader 16. Thus, components of the wearable device 14a are powered and / or the computing system 22 can determine that the first user 60a is in the vicinity of the target 64a. However, as illustrated, the wearable device 14a of the first user 60a is not within the zone 62a of the second reader 18a. Thus, the wearable device 14a is not in communication with the second reader 18a. However, when the first user 60a positions the wearable device 14a within the area 62a, the wearable device 14a is in communication with the second reader 18a and, in one embodiment, may illuminate one or more of the LEDs 54a to facilitate tracking and / or provide a feedback response. For example, as illustrated, the detector 20 is positioned near the target 64a and the second reader 18a. Thus, the detector 20 may detect light emitted by the one or more LEDs 54a (e.g., light emitted due to an interaction between the second RFID tag 36 (FIG. 1) of the wearable device 14a and the second reader 18a) while the wearable device 14 is properly positioned relative to the target 64a and near the second reader 18a within the area 62a.

[0038] Upon receiving a signal from the second reader 18a indicating that an interaction has occurred with the second RFID tag 36 (FIG. 1) of the wearable device 14a (which may include identification information transferred from the second RFID tag 36 (FIG. 1) from the wearable device 14a), and receiving a signal from the detector 20 indicating that light from one or more LEDs 54a has been detected and / or that the light has characteristics corresponding to expected characteristics of light emitted by the one or more LEDs 54a of the wearable device 14a, the computing system 22 will update the database 28 (e.g., assign a score) with information based on the interaction between the first user 60a and the target 64a. In one embodiment, the computing system 22 can determine whether the wearable device 14a was in a state of motion during the interaction between the wearable device 14a and the second reader 18a based on a signal received from the detector 20 (e.g., the detector 20 can include an imaging sensor, camera, or other type of detector that can detect movement of light emitted by one or more LEDs 54a).

[0039] As shown, the wearable device 14b of the second user 60b is present within a zone 62b that includes a signal 32b emitted by the second reader 18b. Thus, the wearable device 14b and the second reader 18b are in communication, and one or more LEDs 54b of the wearable device 14b emit light 58 detectable by the detector 20. Upon receiving a signal from the second reader 18b indicating that an interaction with a second RFID tag 36 (FIG. 1) has occurred (which may include identification information transferred from the second RFID tag 36 from the wearable device 14b), and upon receiving a signal from the detector 20 indicating that light from the LED 54b has been detected and / or that the light has characteristics corresponding to expected characteristics of the light emitted by the LED 54b of the wearable device 14a, the computing system 22 updates the database 28 (e.g., assigns a score) with information based on the interaction between the second user 60b and the target 64b. In one embodiment, the computing system 22 can determine whether the wearable device 14b was in a state of motion during the interaction between the wearable device 14b and the second reader 18b based on the signal received from the detector 20 (e.g., the detector 20 can include an imaging sensor, camera, or other type of detector capable of detecting movement of light emitted by one or more LEDs 54b).

[0040] As mentioned above, in one embodiment, the LED 54 may emit one or more frequencies of visible light to enable tracking and also provide feedback to the user. However, in one embodiment, the LED 54 may emit invisible light (e.g., infrared) to enable the detector 20 to detect the LED 54 and to reduce possible user distraction as the user, for example, moves through an attraction or participates in a game. It should be appreciated that the one or more LEDs 54 of the wearable device 14 may be illuminated in response to receiving a signal 30 from the first reader 16. In such a case, the detector 20 may detect the emitted light, which may have certain characteristics that enable the computing system 22 to determine the user's identity and properly assign the score. The signal from the detector 20 may be considered in combination with the identity transmitted from the first RFID tag 34 (FIG. 1) to the first reader 16 to facilitate the determination of the user's identity and proper assignment of the score. Thus, in some examples, the interactive system 10 may operate without the second reader 18.

[0041] It should also be understood that in one embodiment, the wearable device 14 may include a light detector, and the illustrated detector 20 may instead be a light emitter. In such a case, the microprocessor 38 may write information to the memory 48 of one or more of the RFID tags 34, 36 indicating the detection of light emitted by the light emitter at the detector of the wearable device 14. In one embodiment, the detector of the wearable device 14 may be configured to detect darkness, such that the microprocessor 38 writes to the memory 48 of the RFID tag based on determining that the light level is below a threshold. Data may be transferred from the memory 48 to the RFID reader 16, 18 and may be used by the computing system 22 to confirm a successful interaction (e.g., that the user has properly positioned the wearable device 14 in a dark area).

[0042] 3 illustrates a first user 60a, a second user 60b, a detector 20, a first reader 16, and a second reader 18. The first reader 16, the second reader 18, and the detector 20 are communicatively coupled to a computing system 22, as discussed above. The second reader 18 emits a signal 32 within an area 62. The first user 60a wears a wearable device 14a having one or more LEDs 54a, and the second user 60b wears a wearable device 14b having one or more LEDs 54b. As illustrated, the detector 20 detects light within a range 63 that may overlap with the area 62 associated with the range of the signal 32 from the second reader 18.

[0043] As illustrated, both wearable devices 14a, 14b are within an area 62 associated with a range of a signal 32 from a second reader 18 located near a target 64. Thus, both wearable devices 14a, 14b are in communication with the second reader 18. However, as illustrated, the wearable device 14a worn by the first user 60a is also within a range 63 associated with the detector 20. One or more LEDs 54a of the wearable device 14a may have different illumination characteristics than one or more LEDs 54b of the wearable device 14b (e.g., one or more LEDs 54a may emit red light and one or more LEDs 54b may emit blue light). In the illustrated embodiment, the detector 20 may detect only light from one or more LEDs 54a of the wearable device 14a worn by the first user 60a. Thus, the computing system 22 may determine that the first user 60a interacts with the second reader 18 (and the target 64) differently than the second user 60b. In one embodiment, the computing system 22 may make a decision to award a reward to the users 60a, 60b based on the communication between the wearable devices 14a, 14b and the second reader 18 in combination with whether the detector 20 observes one or more LEDs 54 (e.g., 54a and / or 54b). For example, in the illustrated embodiment, the computing system 22 may award points only to the first user 60a because the detector 20 detects light emitted by one or more LEDs 54a of the wearable device 14a while the wearable device 14a carried by the first user 60a is within the range 62 of the second reader 18.

[0044] As mentioned above, in one embodiment, the interactive system 10 may include only one reader (e.g., either the first reader 16 or the second reader 18) and a corresponding RFID tag (e.g., either the first RFID tag 34 or the second RFID tag 36). For example, if the exemplary interactive system 10 includes only the first reader 16 and the first RFID tag 34, one or more LEDs 54 of each wearable device 14 may emit light continuously while the wearable device 14 is in communication with the first reader 16. Thus, the computing system 22 may award points to the user when the detector 20 detects light emitted from one or more LEDs 54 of the wearable device 14.

[0045] 4 illustrates a first user 60a, a second user 60b, second readers 18a, 18b, and a first reader 16. The first reader 16 and the second readers 18a, 18b are communicatively coupled to a computing system 22. The second reader 18a emits a signal 32a in an area 62a. The second reader 18b emits a signal 32b in an area 62b. As illustrated, an output device 67 (e.g., speaker, light) providing an output 68 (e.g., sound, light) can be positioned near the target 64a.

[0046] Both the wearable device 14a of the first user 60a and the wearable device 14b of the second user 60b are in communication with the first reader 16 (e.g., receive the signal 30 from the first reader 16) and therefore can be powered and can provide identification information to the first reader 16 (e.g., via backscatter). The wearable device 14a of the first user 60a is also in communication with the second reader 18a (e.g., is within the zone 62a and receives the signal 32a). In one embodiment, the sensor 56a of the wearable device 14a can be configured to detect sound and the output device 67 can be configured to provide sound as an output 68. Thus, when the sensor 56a detects the output 68, the microcontroller 38 of the wearable device 14a can write data indicative of this detection to the memory 48 of the wearable device 14a. The antenna 46 of the wearable device 14a may then backscatter this data to the first reader 16 or the second reader 18a. The computing system 22 may determine that a score should be awarded to the first user 60a based on the wearable device 14a being in communication with the second reader 18a and also detecting the output 68. It should be appreciated that to facilitate tracking of the wearable device 14a, the output device 67 may additionally or alternatively include a light emitter that emits light, and the wearable device 14a may include a photodetector configured to detect the light emitted by the light emitter.

[0047] The sensor 56b of the wearable device 14b worn by the second user 60b can be a motion sensor, such as a gyroscope or accelerometer, that detects the motion or position of the wearable device 14b. When the second user 60b moves the wearable device 14b into the area 62b (e.g., as illustrated by the arrow 70), the wearable device 14b is in communication with the second reader 18b. In one embodiment, the sensor 56b can also detect the motion or orientation of the wearable device 14b before or while the wearable device 14b is in communication with the second reader 18b. For example, the sensor 56b can operate to sense the state of the wearable device 14 only when the wearable device 14 communicates with the second reader 18b. In one embodiment, the sensor 56b can operate at other time periods (e.g., whenever sufficient power is provided, such as by communication between the wearable device 14b and the first reader 16). In some such cases, only data acquired when the wearable device 14b communicates with the second reader 18b may be written to the memory 48 of the one or more RFID tags 34, 36 and / or transferred by backscatter to the computing system 22. In some such cases, only data acquired during a certain period of time (e.g., about 1, 2, 3, 4, 5, or more seconds prior to the initial communication between the wearable device 14b and the second reader 18b) may be written to the memory 48 of the one or more RFID tags 34, 36 and / or transferred by backscatter to the computing system 22. In some such cases, only data indicative of movement may be written to the memory 48 of the one or more RFID tags 34, 36 and / or transferred by backscatter to the computing system 22.

[0048] More specifically, the data measured by the sensor 56b is written to the respective memory 48 of one or more of the RFID tags 34, 36. The data is then backscattered to the respective readers 16, 18b, and the computing system 22 can make a scoring decision based on the data indicative of the gesture performed by the second user 60b. As discussed above, in one embodiment, the interactive system 10 can include only certain readers (e.g., one or more first readers 16 or one or more second readers 18b), and the sensor 56 can operate to monitor the state of the wearable device 14 in a similar manner.

[0049] 5 is a flow diagram illustrating one embodiment of a process 80 for operating a wearable device 14 including a sensor 56 in accordance with the techniques of the present invention. It should be understood that the steps discussed herein are merely illustrative and that certain steps may be omitted or added, and that the steps may be performed in a different order. In one embodiment, the process 80 may be performed by the first RFID tag 34 and / or the second RFID tag 36 in cooperation with the microcontroller 38 and other components of the wearable device 14.

[0050] The process 80 begins with the antenna 46 of the first and / or second RFID tags 34, 36 receiving electromagnetic radiation from the respective first reader 16 or second reader 18 (block 82). As discussed above, after the antenna 46 receives the electromagnetic radiation, the antenna 46 can return backscatter with information stored in the memory 48 of the RFID tags 34, 36 to the respective readers 16, 18. In one embodiment, this information can include an identification number unique to the wearable device 14, thus identifying a user (e.g., a user using the wearable device 14). In one embodiment, the electromagnetic radiation emitted by the first reader 16 propagates a relatively long distance, and the electromagnetic radiation emitted by the second reader 18 propagates a relatively short distance. The first RFID tag 34 can communicate with the first reader 16, and the second RFID tag 36 can communicate with the second reader 18.

[0051] When the wearable device 14 receives the electromagnetic radiation, the wearable device 14 derives power from the electromagnetic radiation (block 84). As discussed above, the first RFID tag 34 and the second RFID tag 36 may each include an integrated circuit 52 that powers the microchip 50. In addition, the integrated circuit 52 powers the power supply circuit 42, which in turn powers the microcontroller 38 (block 86) and other components of the wearable device 14 (e.g., the sensor 56). In one embodiment, the power supply circuit 42 may include a capacitor or battery electrically coupled to the receiving coil to store power when the wearable device 14 receives a signal from the first reader 16 and / or the second reader 18.

[0052] Once the microcontroller 38 is powered, the microcontroller 38 may then output a signal (e.g., a control signal) to power the sensor 56 of the wearable device 14 (block 86). Once the sensor 56 is powered, the sensor may measure or determine information indicative of a state of the wearable device 14. For example, if the sensor 56 is an accelerometer, the sensor 56 may detect movement of the wearable device 14. The sensor 56 may transmit information indicative of the detected movement or position of the wearable device 14 to the microcontroller 38.

[0053] The microcontroller 38 then utilizes power to write data indicative of the location or movement of the wearable device 14 to the memory 48 of the RFID tag (e.g., the first RFID tag 34 and / or the second RFID tag 36) (block 88). In one embodiment, the accelerometer can detect the movement of the wearable device 14 over an amount of time or a force applied to the wearable device 14. For example, the movement or force can be associated with a user hitting the target 64, as discussed above. The associated information is then written as data to the memory 48 of the RFID tag 34 and / or 36. The data written to the memory 48 of the RFID tag 34 and / or 36 is transmitted (e.g., via backscatter) to one or more readers (e.g., the first reader 16 and / or the second reader 18). The computing system 22 can then process this information and update the database 28 and / or assign a score based at least in part on the information measured by the sensor 56b. In one embodiment, the data may indicate that the sensor 56 is sensitive to sound or light waves. Thus, the data may indicate that the wearable device 14 is within an area that may be sensitive to such waves. For example, an amusement park attraction may include multiple lights that emit light. Thus, data indicating that the sensor 56 detects light indicates the user's location within the attraction.

[0054] Once the data indicative of the location or movement of the wearable device 14 has been written to the memory 48 of the RFID tag 34, 36, the wearable device 14 may transmit the identification information and data from the RFID tag to the reader 16, 18 (block 90). As discussed above, the antenna 46 of the RFID tag 34, 36 may communicate with the reader 16, 18 by backscattering. In one embodiment, when the wearable device 14 is in communication with the reader system 12 (e.g., the RFID tag 34, 36 is receiving a signal 30, 32 from the reader 16, 18), the antenna 46 of the RFID tag 34, 36 may continuously backscatter data indicative of the location or movement of the wearable device 14. Thus, the computing system 22 may award a score to the user, for example, when the data exceeds a certain threshold (e.g., data from an accelerometer indicates that the user has performed an intentional movement such as waving or sticking out a hand).

[0055] As discussed above, the wearable device 14 may additionally or alternatively include one or more LEDs 54 operating as a tracking device 40. FIG. 6 is a flow diagram illustrating one embodiment of a process 92 for operating a wearable device 14 including one or more LEDs 54 in accordance with the techniques of the present invention. It should be understood that the steps discussed herein are merely illustrative and that certain steps may be omitted or added, and that the steps may be performed in a different order. In one embodiment, some steps of the process 92 may be performed by the first RFID tag 34 and / or the second RFID tag 36 in cooperation with the microcontroller 38 and other components of the wearable device 14. Additionally, some steps of the process 92 may be performed by a detector 20 communicatively coupled to the computing system 22.

[0056] The process 92 begins with the antenna 46 of the first and / or second RFID tags 34, 36 receiving electromagnetic radiation from the respective first reader 16 or second reader 18 (block 82). As discussed above, after receiving the electromagnetic radiation, the antenna 46 may return backscatter to the respective reader 16, 18 with information stored in the memory 48 of the RFID tags 34, 36. In one embodiment, this information may include an identification number unique to the wearable device 14, thus identifying a user (e.g., a user using the wearable device 14). In one embodiment, the electromagnetic radiation emitted by the first reader 16 propagates a relatively long distance and the electromagnetic radiation emitted by the second reader 18 propagates a relatively short distance. The first RFID tag 34 may communicate with the first reader 16 and the second RFID tag 36 may communicate with the second reader 18.

[0057] When the wearable device 14 receives the electromagnetic radiation, the wearable device 14 derives power from the electromagnetic radiation (block 84). As discussed above, the first RFID tag 34 and the second RFID tag 36 may each include an integrated circuit 52 that powers the microchip 50. In addition, the integrated circuit 52 powers the power supply circuit 42, which in turn powers the microcontroller 38 and other components of the wearable device 14 (e.g., the tracking device 40, such as the LEDs 54). In one embodiment, the power supply circuit 36 ​​may include a capacitor or battery electrically coupled to the receiving coil to store power when the wearable device 14 receives a signal from the first reader 16 and / or the second reader 18.

[0058] Once the microcontroller 38 is powered, the microcontroller 38 then outputs a signal (e.g., a control signal) to power one or more LEDs 54 of the tracking device 40 (block 94). In one embodiment, the control signal is a variable voltage applied to one or more of the LEDs 54, causing the LEDs to light up on and off at a particular rate.

[0059] The detector 20 then detects light emitted by one or more LEDs 54 (block 96). For example, the detector 20 may detect that the wearable device 14 worn by the user is in motion (e.g., the user is waving or hitting a target) during an interaction or communication between the second reader 18 and the second RFID tag 36 of the wearable device 14. In one embodiment, the detector 20 may monitor a characteristic (e.g., color, blinking pattern) of the LED 54 of the tracking device 40. The characteristic of the LED 54 may be associated with one wearable device 14 or a group of wearable devices 14. Thus, when the detector 20 detects light, light indicative of motion, or light having a characteristic, the computing system 22 may award a score to the user based on a successful interaction indicated by both the communication between the wearable device 14 and the second reader 18 and the detection at the detector 20 of the light emitted by the LED 54.

[0060] Accordingly, the present disclosure relates to an interactive system having a reader system and a wearable device utilizing RFID to track guest interactions with interactive elements. More specifically, the reader system includes one or more readers that communicate (e.g., send and receive signals) with one or more tags of the wearable device through electromagnetic radiation. The reader continuously emits electromagnetic radiation within a range (e.g., a communication range), and the reader communicates with the wearable device when the wearable device enters this range. The electromagnetic radiation received by the wearable device provides power to the tracking device. For example, the tracking device may include an LED that emits light that is detected by a detector. In one embodiment, a computing system is communicatively coupled to the detector and determines or confirms the identity of the user based on characteristics of the LED that may be unique to the wearable device (e.g., an LED of one wearable device may emit red light, while an LED of another wearable device 14 emits blue light). In one embodiment, the computing system can award a score to the user or otherwise update the user's user profile based at least in part on the detected light. In one embodiment, the tracking device can be a sensor configured to detect a state, such as a position or movement, of the wearable device. The movement can indicate that the user is performing an appropriate gesture (e.g., sticking out a hand, jumping, dancing, waving, or other gesture) that may be expected or required for a particular interactive element. The data acquired by the sensor can be stored on a memory of one or more RFID tags of the wearable device and then transmitted (e.g., via backscatter) to a respective reader communicatively coupled to the computing system. In one embodiment, the computing system can award a score to the user or otherwise update the user's user profile based at least in part on the state detected by the sensor.

[0061] While only certain features of the present disclosure have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is therefore to be understood that it is intended to cover by the appended claims all such modifications and changes that fall within the true spirit of the invention. It is to be understood that any of the features illustrated or described with respect to Figures 1-6 can be combined in any suitable manner. For example, the wearable device 14 can include any suitable combination of sensors 56 and LEDs 54 to facilitate tracking of the wearable device.

[0062] The technology provided and claimed herein is applied with reference to specific examples of tangible and practical nature that clearly improve the art, and is therefore not abstract, intangible, or purely theoretical. Moreover, when any claim appended hereto includes one or more elements designated as "means for performing a function" or "step for performing a function," such elements are intended to be construed under 35 U.S.C. 112, paragraph 6. However, for any claim that includes an element designated in any other manner, such element shall not be construed under 35 U.S.C. 112(f).

Claims

1. A wearable device, a radio frequency identification (RFID) tag having a memory for storing identification information; a power harvesting circuit configured to harvest power from electromagnetic radiation; a sensor coupled to the power harvesting circuit and configured to utilize the power to monitor a state of the wearable device; a microcontroller coupled to the sensor and configured to write data indicative of the condition to the memory of the RFID tag, the RFID tag being configured to transmit the identification information and the data in response to receiving the electromagnetic radiation from an RFID reader; Wearable devices, including

2. The device of claim 1 , wherein the wearable device includes an energy storage device configured to store power.

3. The device of claim 1 , wherein the sensor includes at least an accelerometer, a gyrometer, a pressure sensor, an acoustic sensor, or an optical sensor.

4. The device of claim 1 , wherein the monitored state of the wearable device includes a location of the wearable device.

5. 13. The device of claim 1, further comprising one or more LEDs configured to facilitate detection of the wearable device by an external photodetector, the microcontroller configured to generate a control signal for illuminating at least one of the one or more LEDs in response to receiving the electromagnetic radiation from the RFID reader.

6. The device of claim 5 , wherein the control signal is configured to cause at least one of the one or more LEDs to illuminate intermittently at a predetermined rate.

7. 1. A system comprising: a wearable device comprising a radio frequency identification (RFID) tag, the RFID tag comprising a memory for storing identification information, the RFID tag configured to transmit the identification information to an RFID reader in response to receiving electromagnetic radiation from the RFID reader; a tracking device supported by the wearable device and configured to facilitate tracking a position of the wearable device; and a power harvesting circuit supported by the wearable device and configured to harvest power from the received electromagnetic radiation, the harvested power being utilized to transmit the identification information and to operate the tracking device; and a processor configured to receive the identification information from the RFID reader and a signal indicative of a location of the wearable device, the processor configured to detect an interaction between the wearable device and an element of an attraction based on the received identification information and the received signal; Including, the system.

8. The system of claim 7 , wherein the tracking device includes one or more light emitting diodes (LEDs) configured to emit light.

9. a microcontroller supported by the wearable device and configured to generate a control signal to illuminate at least one of the one or more LEDs in response to receiving the electromagnetic radiation at the RFID tag; a detector coupled to the processor and configured to detect light emitted by the one or more LEDs and configured to generate a signal indicative of a position of the wearable device; The system of claim 8 , comprising:

10. 10. The system of claim 9, wherein the generated control signal is configured to cause the at least one of the one or more LEDs to illuminate intermittently at a predetermined rate.

11. 10. The system of claim 9, wherein the received signal is indicative of one or more characteristics of light emitted by the at least one of the one or more LEDs, and the processor is configured to distinguish the wearable device from another wearable device based on the one or more characteristics.

12. The system of claim 11 , wherein the one or more characteristics include color, proportion, pattern, or any combination thereof.

13. 8. The system of claim 7, further comprising a microcontroller supported by the wearable device and configured to interact with the tracking device to write data indicative of the location of the wearable device to the memory of the RFID tag, the RFID tag being configured to transmit a signal indicative of the location of the wearable device from the memory to the RFID reader in response to receiving the electromagnetic radiation from the RFID reader.

14. The system of claim 13 , wherein the tracking device includes at least an accelerometer, a gyrometer, a pressure sensor, an acoustic sensor, or an optical sensor.

15. The system of claim 7 , wherein the processor is configured to adjust the element of the attraction based on the detection of the interaction between the wearable device and an element of the attraction.

16. transmitting electromagnetic radiation from a radio frequency identification (RFID) reader; Harvesting power from the electromagnetic radiation using power harvesting circuitry in a wearable device; utilizing the extracted power to operate a sensor carried by the wearable device to monitor a position of the wearable device; utilizing the extracted power to operate a microcontroller carried by the wearable device to write data indicative of the monitored location to a memory of an RFID tag carried by the wearable device; transmitting identification information and said data from a memory of said RFID tag to said RFID reader in response to receiving said electromagnetic radiation from said RFID reader; Includes, a method.

17. 17. The method of claim 16, including using a processor to determine that a guest has interacted with an element of an attraction based on the transmitted identification information and the transmitted data.

18. 20. The method of claim 17, comprising using the processor to adjust the element of the attraction based on a determination that the guest has interacted with the element.

19. The method of claim 16 , wherein the sensor includes at least an accelerometer, a gyrometer, a pressure sensor, an acoustic sensor, or an optical sensor.

20. 17. The method of claim 16, comprising generating, via the microcontroller, a control signal in response to receiving the electromagnetic radiation from the RFID reader, for illuminating one or more light emitting diodes (LEDs) supported by the wearable device to facilitate detection of the wearable device by an external photodetector.

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