Device pairing using a safety zone

Abstract

Host device comprising: a transceiver; an electronic processor electrically coupled to the transceiver and configured to: receive, from a pairing device via the transceiver, a low-power broadcast message when the host device is in a broadcast zone of the pairing device, the low-power broadcast message containing pairing information; transmit, via the transceiver, a first indication that the host device is in the broadcast zone of the pairing device after receiving the low-power broadcast message; receive, from a guest device via the transceiver, a second indication that the guest device is in the broadcast zone of the pairing device; and pair with the guest device based on the pairing information from the low-power broadcast message and the second indication.

Description

BACKGROUND OF THE INVENTIONA variety of data are generally exchanged over short-range wireless links or near-field links, for example, over a Bluetooth ®- link. To protect private data, many wireless devices are configured to identify specific devices with which they can establish a connection. The process for establishing a connection between wireless devices is often referred to as "pairing" ("pairing"). In many cases, secure pairing concepts include considerable user intervention. For example, secure pairing concepts may require a user to enter a passkey (access key) on both devices. In other cases, secure pairing concepts may require additional hardware, such as a near-field communication (NFC) chip, microphones, accelerometers, or other devices. A wireless communication system is known from the prior art in the form of U.S. Pat. No. 2016 / 0 055 428 A1, consisting of mobile and stationary devices and radio beacons. Upon receiving a broadcast message from a radio beacon, the mobile device checks whether it is in the reception area of the stationary device in order to possibly carry out authentication procedures. Furthermore, EP 1 655 922 A1 describes the initiation of a wireless pairing process between a camera and a printer, by means of a special NFC card, which is successively brought into the reception area of the camera or the printer.BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGSThe accompanying figures, wherein like reference numerals refer to identical or functionally similar elements throughout the separate views, together with the following detailed description, are incorporated in and form a part of the specification, and serve to further illustrate embodiments of concepts that include the claimed invention, and explain various principles and advantages of these embodiments. FIG. 1 is a diagram of a system for pairing wireless devices, in accordance with some embodiments. FIG. 2 is a diagram of a pairing device, in accordance with some embodiments. FIG. 3 is a diagram of a host device, in accordance with some embodiments. FIG. 4 is a diagram of a guest device, in accordance with some embodiments. FIG. 5 is a flow diagram of a method for safety zone pairing, in accordance with some embodiments. FIG. 6 is a flow diagram of a method for safety zone pairing, in accordance with some embodiments.Those skilled in the art will appreciate that elements in the figures are illustrated for purposes of simplicity and clarity and are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of embodiments of the present invention.The apparatus and method components have been represented, where appropriate, by conventional symbols in the drawings, showing only those specific details that are essential to an understanding of the embodiments of the present invention so as not to obscure the disclosure with details readily apparent to those of ordinary skill in the art having the benefit of this description.DETAILED DESCRIPTION OF THE INVENTIONOne embodiment provides a host device having a transceiver and an electronic processor electrically coupled to the transceiver. The electronic processor is configured to receive a low power broadcast message from a pairing device via the transceiver when the host device is in a broadcast zone of the pairing device, the low power broadcast message including pairing information. The electronic processor is also configured to send, via the transceiver, a first indication that the host device is in the broadcast zone of the pairing device after receiving the low power broadcast message. The electronic processor is further configured to receive, from a guest device via the transceiver, a second indication that the guest device is in the broadcast zone of the pairing device and to pair with the guest device based on the pairing information of the low power broadcast message and the second indication.Another embodiment provides a method for security zone pairing comprising receiving, with a host device, a low power broadcast message when the host device is in a broadcast zone of a pairing device, wherein the low power broadcast message includes pairing information. The method also includes transmitting, via a transceiver of the host device, a first indication that the host device is in the broadcast zone of the pairing device after receiving the low power broadcast message. The method further includes receiving, via the transceiver, a second indication that a guest device is in the broadcast zone of the pairing device, and pairing, with the processor of the host device, the host device with the guest device based on the pairing information of the low power broadcast message and the second indication.Another embodiment provides a system for pairing wireless devices, including a pairing device having a transmitter configured to transmit a low power broadcast message in a broadcast zone having a size. The low power broadcast message includes pairing information. The system also includes a guest device. The guest device has a first transceiver and is configured to receive the low power broadcast message and transmit an indication that the guest device is in the broadcast zone after receiving the low power broadcast message. The system further includes a host device having a second transceiver and is configured to receive the indication of the low power broadcast message. The host device is further configured to pair with the guest device based on the pairing information of the low power broadcast message and the display.Yet another embodiment provides a method for security zone pairing, comprising transmitting, with a transmitter of the pairing device, a low-power broadcast message in a broadcast zone having a size, wherein the low-power broadcast message includes pairing information. The method also includes receiving, with a first transceiver of a guest device in the broadcast zone, the low power broadcast message and transmitting, with the first transceiver, an indication that the guest device is in the broadcast zone after receiving the low power broadcast message. The method further includes receiving, with a second transceiver of a host device in the broadcast zone, the display and the low power broadcast message, and pairing the host device with the guest device based on pairing information of the low power broadcast message and the display.FIG. 1 is a diagram of a system 100 for pairing wireless devices. In the illustrated example, the system 100 includes a pairing device 110, a host device 120, and a guest device 130. The pairing device 110 generates a low power wireless signal with a low power broadcast message that is transmitted in a broadcast zone 140. The low power broadcast message may include pairing information, for example, a service identifier and a passkey.The host device 120 and the guest device 130 are devices that can be paired with each other to exchange information without using wires or cables. Therefore, they are referred to as "wireless devices". The host device 120 may be, for example, a two-way mobile radio, a smartphone, or a similar device. The guest device 130 may be, for example, a Bluetooth ®- earphone, smart watch, wireless touchpad, or other similar device. In some embodiments, the functionality of the host device 120 described herein may be performed by the guest device 130, and the functionality of the guest device 130 described herein may be performed by the host device 120. The host device 120 and the guest device 130 are configured to receive the low power broadcast message when in the broadcast zone 140. A device outside the broadcast zone 140, for example device 150, does not receive the low power broadcast message.The size of the broadcast zone 140 is adjustable based on the strength of the low power wireless signal generated by the pairing device 110. Thus, the size of the broadcast zone 140 may be increased or decreased based on the strength of the wireless signal generated by the pairing device 110. That is, as the power of the wireless signal is increased, the area covered by the broadcast zone 140 is increased. Similarly, as the power of the wireless signal is decreased, the area covered by the broadcast zone 140 is decreased.FIG. 1 illustrates only one example embodiment of a system 100 for pairing wireless devices. In other embodiments, system 100 may include more or fewer components and may perform functions not explicitly described herein.FIG. 2 is a diagram of an embodiment of pairing device 110. In the illustrated example, pairing device 110 includes an electronic processor 210, a memory 220, a transceiver 230, and an optional input / output interface 240. The electronic processor 210, the memory 220, the transceiver 230, and the input / output interface 240 communicate via one or more control and / or data buses (e.g., a communication bus 250). FIG. 2 illustrates only one example embodiment of pairing device 110. Pairing device 110 may include more or fewer components and may perform functions other than those explicitly described herein.In some embodiments, the electronic processor 210 is implemented as a microprocessor with separate memory, such as the memory 220. In other embodiments, the electronic processor 210 may be implemented as a microcontroller (with the memory 220 on the same chip). In other embodiments, the electronic processor 210 may be implemented using multiple processors. In addition, the electronic processor 210 may be partially or wholly implemented as, for example, a field-programmable gate array (FPGA)), an application specific integrated circuit (ASIC)), and the like, and the memory 220 may not be required or may be appropriately modified. In the illustrated example, the memory 220 includes a non-transitory computer readable memory storing instructions received and executed by the electronic processor 210 to perform the functionality of the pairing device 110 described herein. The memory 220 may include, for example, a program storage area and a data storage area. The program storage area and the data storage area may include combinations of various types of memory, such as read-only memory (ROM)) and random-access memory (RAM)).The transceiver 230 enables wireless communication from the pairing device 110 to, for example, the host device 120 and the guest device 130 located in the broadcast zone 140. In other embodiments, pairing device 110 may include separate transmitting and receiving components, for example, a transmitter and a receiver, instead of transceiver 230. In still other embodiments, pairing device 110 may include only one transmitter that transmits the low power broadcast message.The input / output interface 240 may include one or more input mechanisms (for example, a touchpad, a button, a button, and the like), one or more output mechanisms (for example, a display, a speaker, light emitting diodes (LEDs)), and the like), or a combination thereof, or a combined input and output mechanism such as a touch screen.As described above, the pairing device 10 is configured to generate a low power wireless signal. The pairing device 110 transmits the low power wireless signal with the low power broadcast message using the transceiver 230 or a transmitter of the pairing device 110. In some embodiments, pairing device 110 is compatible with Bluetooth ®- Low-Energy ("Bluetooth ® Low-Energy (LE)) standards. Specifications for the Bluetooth ®- low power standards can be found at https: / / www.bluetooth.com / specifications / adopted-specifications. Accordingly, the pairing device 110 may have a maximum transmission power of 10 milliwatts (mW). Further, the transmit power of the pairing device 110 may be configurable to adjust the size of the broadcast zone 140. For example, the transmission power of the pairing device 110 may be varied between 0.01 mW and 10 mW. In some embodiments, the transmit power of pairing device 110 may be below 1 mW to reach a safety zone having a radius less than 1 meter (m).In some embodiments, pairing device 110 is a device that functions only as a pairing device. In other embodiments, pairing device 110 is a wireless communication suitable device configured to function as a pairing device. For example, the functionality of pairing device 110 may be incorporated into a two-way mobile radio, a smart phone, a wireless USB (universal serial bus) dongle that can be plugged into a laptop, and the like. In still other embodiments, the functionality of pairing device 110 may be incorporated into host device 120 or guest device 130.FIG. 3 is a diagram of an embodiment of host device 120. In the illustrated example, the host device 120 includes a host electronic processor 310, a host memory 320, a host transceiver 330, and a host input / output interface 340. Host electronic processor 310, host memory 320, host transceiver 330, and host input / output interface 340 communicate via one or more control and / or data buses (e.g., host communication bus 350). FIG. 3 illustrates only one example embodiment of the host device 120. The host device 120 may include more or fewer components and may perform functions other than those explicitly described herein.The host electronic processor 310 may be implemented in various ways, including ways similar or similar to those described above with respect to the electronic processor 210. Similarly, host memory 320 may be implemented in various ways, including ways similar or similar to those described above with respect to memory 220. The host memory 320 may store instructions received and executed by the host electronic processor to perform the functionality described herein.Host transceiver 330 enables wireless communication for host device 120 with, for example, pairing device 110 and / or guest device 130. In other embodiments, host device 120 may include separate transmit and receive components, for example, a transmitter and a receiver, instead of a host transceiver 330.The host input / output interface 340 may include one or more input mechanisms (e.g., a touchpad, a keyboard, a button, a button, and the like), one or more output mechanisms (e.g., a display, a speaker, and the like), or a combination thereof, or a combined input and output mechanism such as a touch screen.FIG. 4 is a diagram of an embodiment of guest device 130. In the illustrated example, the guest device 130 includes a guest electronic processor 410, a guest memory 420, a guest transceiver 430, and a guest input / output interface 440. The guest electronic processor 410, the guest memory 420, the guest transceiver 430, and the guest input / output interface 440 communicate via one or more control and / or data buses (e.g., a guest communication bus 450). FIG. 4 illustrates only one example embodiment of guest device 130. The guest device 130 may include more or fewer components and may perform functions other than those explicitly described herein.The guest electronic processor 410 and the guest memory 420 may be implemented in various ways, including ways similar or similar to those described above with respect to other processors or memories. Also, guest memory 420 may store instructions received and executed by guest electronic processor 410 to perform the functionality described herein.The guest transceiver 430 enables wireless communication for the guest device 430 with, for example, the pairing device 110 and / or the host device 120. In other embodiments, guest device 130 may include separate transmitting and receiving components, for example, a transmitter and a receiver, instead of guest transceiver 430.The guest input / output interface 440 may include components similar or similar to those described with respect to the host input / output interface 340.FIG. 5 is a flow diagram illustrating an example method 400 for safety zone pairing. As illustrated in FIG. 5, the method 500 includes transmitting, with the pairing device 110, a low-power broadcast message in the broadcast zone 140 (at block 510). The low power broadcast message includes pairing information used by the host device 120 to pair with the guest device 130. The pairing device 110 transmits the low-power broadcast message with the transceiver 230 or a transmitter of the pairing device 110.The pairing information includes, for example, a pairing service identifier, a passkey, and a time-out value. The pairing service identifier may be a service identifier assigned to the security zone pairing service and provided to devices suitable for security zone pairing. In some embodiments, the pairing service identifier allows other devices, such as the host device 120 and the guest device 130, to identify the pairing device 110 and initiate a security zone pairing operation. The passkey is, for example, a random number generated by the pairing device 110 to be exchanged between the host device 110 and the guest device 130. The timeout value specifies the time period after which the passkey expires. Accordingly, the pairing device 110 may generate a new passkey after an old passkey has expired. For example, pairing device 110 may generate a new passkey every minute.The guest device 130 receives the low power broadcast message when the guest device 130 is in the broadcast zone 140 (at block 520). The guest device 130 receives the low power broadcast message via the guest transceiver 430 (e.g., a first transceiver) of the guest device 130. In some embodiments, the guest device receives user input to enable a security zone pairing mode. In these embodiments, guest device 130 is configured to receive the low power broadcast message when in the security zone pairing mode.After receiving the low power broadcast message, the guest device 130 sends an indication that the guest device 130 is in the broadcast zone 140 (at block 530). The guest device 130 sends the indication via the guest transceiver 430 (i.e., a first transceiver) of the guest device 130. When in the broadcast zone 140, the guest device 140 sends, for example, a service identifier, a guest device identifier, and a flag. The service identifier indicates that the device is suitable for security pairing. In some embodiments, the service identifier may be the service identifier received as part of the pairing information. The guest device identifier contains identification information about the guest device 130 that enables other devices, such as the host device 120, to pair with the guest device 130. The guest device identifier is, for example, a serial number assigned to the guest device 130, or other identification information of the guest device 130. The flag indicates whether the guest device 130 is currently in the broadcast zone 140. The indication may include the service identifier, the guest device identifier, and the flag. However, in some implementations, the display may include only the flag indicating that the guest device 130 is in the broadcast zone 140. In some embodiments, guest device 130 sends the indication only when it is in the security zone pairing mode.The host device 120 receives the low power broadcast message from the pairing device 110 and the display from the guest device 130 when the host device 120 is in the broadcast zone 140 (at block 540). The host device 120 receives the display and the low power broadcast message via the host transceiver 330 (e.g., a second transceiver). In some embodiments, the host device 120 receives user input to enable the security zone pairing mode. In these embodiments, the host device 120 is configured to receive the low power broadcast message when in the security zone pairing mode.In some embodiments, host device 120 also sends an indication (e.g., a third indication) that host device 120 is in broadcast zone 140. The display is transmitted from the host device 120 and may include information similar to or the same as that described above with respect to the display transmitted from the guest device 130. In some embodiments, host device 120 sends the indication only when it is in the security zone pairing mode.The host device 120 pairs with the guest device 130 based on the pairing information included in the low power broadcast message received from the pairing device 110 and the display received from the guest device 130 (at block 550). That is, the host device 120 establishes a connection with the guest device 130 without user interaction by exchanging the passkey included in the low-power broadcast message when the guest device 130 and the host device 120 are in the broadcast zone 140. The host device 120 initiates the passkey exchange when the indication received from the guest device 130 indicates that the guest device 130 is in the broadcast zone 140. Similarly, guest device 130 accepts passkey exchange when the indication received from host device 120 indicates that host device 120 is in broadcast zone 140. The initiated pairing uses, for example, classic Bluetooth ®- pairing ("classic Bluetooth ® pairing"), direct Wi-Fi™ pairing ("Wi-Fi™ direct pairing"), and the like.FIG. 6 is a flow diagram illustrating an example method 600 of safety zone pairing. As illustrated in FIG. 6, the method 600 includes receiving, with the host device 120, the low power broadcast message when the host device 120 is in the broadcast zone 140 of the pairing device 110 (at block 610). As described above, the low power broadcast message includes pairing information used by the host device 120 to pair with the guest device 130. The host device 120 may be configured to receive the low power broadcast message when the security zone pairing mode is active.After receiving the low power broadcast message, the host device 120 sends a first indication via the host transceiver 330 that the host device 120 is in the broadcast zone 140 of the pairing device 110 (at block 620). As described above, in some embodiments, the host device 120 sends the first indication only when the host device 120 is in the security zone pairing mode. The host device 120 also receives a second indication from the guest device 130 via the host transceiver 330 that the guest device 130 is in the broadcast zone 140 of the pairing device 110 (at block 630).The host device 120 pairs with the guest device 130 based on the information included in the low power broadcast message received from the pairing device 110 and the second indication received from the guest device 130 (at block 640). As described above, pairing is initiated when the first display and the second display indicate that both the host device 120 and the guest device 130 are in the broadcast zone 140. Pairing is performed by, for example, exchanging the passkey included in the pairing information.In some embodiments, pairing device 110 may include additional security features to notify a user when broadcast zone 140 is not secure. For example, pairing device 110 may scan for other devices capable of security zone pairing, such as other pairing devices. The pairing device 110 may acquire another pairing device (e.g., a second pairing device) by acquiring a low-power broadcast message including the pairing service identifier from the second pairing device. When a pairing device 110 determines that there are other pairing devices in the vicinity, the pairing device 110 provides a user with an indication (e.g., a second indication) that the broadcast zone 140 is not secure. The pairing device 110 notifies the user by, for example, flashing an LED on the pairing device 110, changing the color of the LED on the pairing device 110, or the like.In some embodiments, the low power broadcast message may also include a security zone number. The security zone number may be generated randomly upon turning on the pairing device 110. This security zone number may also be included in the displays sent from the host device 120 and the guest device 130. This allows the host device 120 to pair with the guest device 130 only when they are both in the same security zone created by the broadcast zone 140 of the pairing device 110.As described above, pairing device 110, host device 120, and guest device 130 may communicate with each other using Bluetooth ®- low-power signals. In some embodiments, pairing device 110, host device 120, and guest device 130 may utilize other low-power communication techniques to communicate with each other. For example, pairing device 110, host device 120, and guest device 130 may use a ANT™ protocol, a Zigbee ®- protocol, and the like. In addition to communicating in the broadcast zone using low power technologies, pairing device 110, host device 120, and guest device 130 are capable of communicating with other devices (e.g., device 150) using high power communication technologies. For example, pairing device 110, host device 120, and guest device 130 are capable of communicating with other devices using Bluetooth ®, Wi-Fi™ and the like. Further, the pairing device 110, the host device 120, and the guest device 130 may also communicate via a communication network such as a cellular network, a land mobile radio (LMR) network, the Internet, and the like.An advantage of the above techniques is that the techniques provide equal or better levels of security, such as use of near field communication, or other out-of-band pairing mechanisms, but without the need for the terminals to have dedicated hardware.In the foregoing specification, specific embodiments have been described. However, it will be apparent to those skilled in the art that various modifications and changes may be made without departing from the spirit of the invention as set forth in the claims below. Accordingly, the specification and figures are to be regarded in an illustrative rather than a restrictive sense, and all such modifications are intended to be included within the spirit of the present teachings.The benefits, advantages, solutions to problems, and any conceivable element that results in any benefit, advantage, or solution occurring or becoming more pronounced are not intended to be construed as critical, required, or essential features or elements of any claim or any claims. The invention is defined solely by the appended claims, including any change made during the pendency of the present application and all equivalents of such claims as issued.Moreover, in this document, relational terms such as first and second, top and bottom, and the like are intended to be used exclusively to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," "has," "having," "including," "including," "containing," "containing," or any variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or device comprising a list of elements includes, includes, contains, not only includes such elements, but may include other elements not expressly listed or inherent to such processes, methods, articles, or devices. An element continuing with "comprises... a", "has... a", "includes... a", "includes... a" does not include, without further editions, the existence of additional identical elements in the process, method, article, or apparatus comprising the element. The terms "a" and "an" are defined as one or more unless expressly stated herein. The terms "substantially," "essential," "about," "about," or any other version thereof, have been defined as being "near" as would be understood by those skilled in the art, and in one non-limiting embodiment, the term is defined to be within 10%, in another embodiment within 5%, in another embodiment within 1%, and in another embodiment within 0.5%. The term "coupled" as used herein is defined as "connected," although not necessarily directly and not necessarily mechanically. A device or structure that is "configured" in a particular manner is configured in at least this manner, but may also be configured in at least one manner that is not listed.Some embodiments are desired to include one or more generic or specialized processors (or "processing devices"), such as microprocessors, digital signal processors, custom processors, and field programmable gate arrays (FPGAs), and unique stored program instructions (including both software and firmware) that control the one or more processors to implement, in conjunction with certain non-processor circuits, some, most, or all of the functions of the method and / or apparatus described herein. Alternatively, some or all of the functions may be implemented by a state machine that does not have stored program instructions, or in one or more application specific integrated circuits (ASICs) in which each function or some combinations of certain of the functions are implemented as custom logic. Of course, a combination of the two approaches may be used.Moreover, an embodiment may be implemented as a computer readable storage medium having computer readable code stored thereon for programming a computer (e.g., comprising a processor) to perform a method described and claimed herein. Examples of such computer readable storage media include, but are not limited to, a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a ROM (Read Only Memory), a PROM (Programmable Read Only Memory), an EPROM (Erasable Programmable Read Only Memory), an EEPROM (Electrically Erasable Programmable Read Only Memory), and a flash memory. Furthermore, one skilled in the art, notwithstanding possible significant efforts and a wide design choice, e.g., due to available time, current technology, and economic considerations, directed by the concepts and principles disclosed herein, is expected to be readily able to generate such software instructions and programs and ICs with minimal experimentation.The Abstract of the Disclosure is provided to allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the spirit or meaning of the claims. In addition, it can be seen from the foregoing detailed description that various features are grouped together in various embodiments to further emphasize the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter resides in less than all features of a single disclosed embodiment. Thus, the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separately claimed subject matter.

Claims

A host device comprising: a transceiver; an electronic processor electrically coupled to the transceiver and configured to: receive, from a pairing device via the transceiver, a low power broadcast message when the host device is in a broadcast zone of the pairing device, the low power broadcast message including pairing information; transmit, via the transceiver, a first indication that the host device is in the broadcast zone of the pairing device after receiving the low power broadcast message; receive, from a guest device via the transceiver, a second indication that the guest device is in the broadcast zone of the pairing device; and pair with the guest device based on the pairing information of the low power broadcast message and the second indication.The host device of claim 1, wherein the pairing information includes a pairing service identifier and a passkey.The host device of claim 1, wherein the low power broadcast message is compatible with a Bluetooth Low Energy (LE) standard ("Bluetooth Low Energy" (LE) standard).The host device of claim 1, wherein the low power broadcast message is transmitted at or below 1 milliwatt (mW).A method for security zone pairing, comprising: receiving, with a host device, a low power broadcast message when the host device is in a broadcast zone of a pairing device, wherein the low power broadcast message includes pairing information; transmitting, via a transceiver of the host device, a first indication that the host device is in the broadcast zone of the pairing device after receiving the low power broadcast message; receiving, via the transceiver, a second indication that the guest device is in the broadcast zone of the pairing device, and pairing, with a processor of the host device, the host device with the guest device based on the pairing information of the low power broadcast message and the second indication.The method of claim 5, wherein the pairing information includes a pairing service identifier and a passkey.The method of claim 5, wherein the low power broadcast message is compatible with a Bluetooth Low Energy (LE) standard ("Bluetooth Low Energy" (LE) standard).The method of claim 5, wherein the low power broadcast message is transmitted at or below 1 milliwatt (mW).A system for pairing wireless devices, the system comprising: a pairing device having a transmitter configured to transmit a low power broadcast message in a broadcast zone having a size, the low power broadcast message including pairing information; a guest device having a first transceiver and configured to receive the low power broadcast message and transmit an indication that the guest device is in the broadcast zone after receiving the low power broadcast message; a host device having a second transceiver and configured to receive the indication and the low power broadcast message; and wherein the host device is further configured to pair with the guest device based on the pairing information of the low power broadcast message and the display.The system of claim 9, wherein the pairing information includes a pairing service identifier and a passkey.The system of claim 9, wherein the pairing device is further configured to: detect that a second pairing device is in the broadcast zone; and generate a second indication that the broadcast zone is not secure.The system of claim 9, wherein the host device is further configured to send a third indication that the host device is in the security zone, wherein the guest device is further configured to receive the third indication.The system of claim 9, wherein the low power broadcast message is compatible with a Bluetooth Low Energy (LE) standard ("Bluetooth Low Energy" (LE) standard).The system of claim 9, wherein the low power broadcast message is transmitted at or below 1 milliwatt (mW).A method for security zone pairing, comprising: transmitting, with a transmitter of a pairing device, a low power broadcast message in a broadcast zone having a size, wherein the low power broadcast message includes pairing information; receiving, with a first transceiver of a guest device in the broadcast zone, the low power broadcast message; transmitting, with the first transceiver, an indication that the guest device is in the broadcast zone after receiving the low power broadcast message; receiving, with a second transceiver of a host device in the broadcast zone, the indication, and the low power broadcast message; and pairing the host device with the guest device based on pairing information of the low power broadcast message and the display.The method of claim 15, wherein the pairing information includes a pairing service identifier and a passkey.The method of claim 15, further comprising: detecting, with the pairing device, that a second pairing device is in the broadcast zone; and generating, with the pairing device, a second indication that the broadcast zone is not secure.The method of claim 15, further comprising: sending, with the host device, a third indication that the host device is in the security zone; and receiving, with the guest device, the third indication.The method of claim 15, wherein the low power broadcast message is compatible with a Bluetooth Low Energy (LE) standard ("Bluetooth Low Energy" (LE) standard).The method of claim 15, wherein the low power broadcast message is transmitted at or below 1 milliwatt (mW).

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