Wearable Multi-RFID Device with Selective Shielding
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Solution Overview
Problem
Conventional RFID devices require multiple cards for accessing different restricted areas, leading to inconvenience and inefficiency due to manual selection and simultaneous activation of all tags without differentiation, resulting in wasted time and energy.
Innovation Solution
A wearable multi-RFID device with a container having fixed slots and an outer casing with electromagnetic shielding, allowing selective exposure of RFID tags based on external parameters such as location, network SSIDs, or gestures, using a processor and sensors to manage tag activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple RFID tags are placed in a single device, then the user can access multiple restricted areas with one device, but the device becomes more complex and harder to manage
Solution Approach 1:
The device divides multiple RFID tags into separate fixed slots, with each slot independently controllable. The outer casing segments the shielding into multiple sections that can be independently opened to expose only the required RFID tag for scanning, thereby managing complexity through modular organization.
Solution Approach 2:
The outer casing is designed to dynamically open and close specific sections corresponding to different RFID tag slots. This dynamic control allows the device to adapt its state based on which restricted area needs access, switching between shielded and exposed states for different tags without manual intervention.
2Reliability
If all RFID tags are activated simultaneously, then all tags are available for scanning, but time and energy are wasted
Solution Approach 1:
Instead of activating all RFID tags simultaneously, the device activates only the specific tag needed for the current restricted area. The outer casing opens only the section corresponding to the required tag, leaving other tags shielded and inactive, thereby reducing unnecessary energy consumption and activation time.
Solution Approach 2:
The device pre-organizes RFID tags in fixed slots with corresponding shielded sections in the outer casing. When access is needed, the system quickly opens only the relevant section, having already prepared the tag in its designated slot, eliminating the need for manual selection or sequential activation of multiple tags.
3Ease of operation
If manual selection of RFID tag is required, then the user can choose which tag to activate, but the process becomes inconvenient and time-consuming
Solution Approach 1:
The device performs automatic tag selection based on the target restricted area. The system independently determines which RFID tag should be activated and opens the corresponding section of the outer casing without requiring manual user input, thereby improving ease of operation while minimizing time loss.
Solution Approach 2:
The device uses feedback from the scanning process to automatically switch between RFID tags. When one tag is not recognized, the system receives feedback and automatically opens the next relevant section to try another tag, eliminating manual intervention and reducing selection time.
4Object-affected harmful factors
If electromagnetic shielding is used to protect RFID tags, then unauthorized scanning is prevented, but the tags cannot be accessed when needed
Solution Approach 1:
The outer casing with electromagnetic shielding is designed to dynamically transition between closed and open states. When closed, it provides robust protection against unauthorized scanning. When opened, it allows legitimate access to the RFID tag. This dynamic design maintains security while enabling convenient access when needed.
Solution Approach 2:
The electromagnetic shielding is applied locally to specific sections of the outer casing corresponding to each RFID tag slot. This allows selective opening of only the necessary section for access, maintaining shielding protection for other tags while enabling targeted access without compromising overall security.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and optimized access to multiple restricted areas with a single device by automatically activating the appropriate RFID tag based on context, reducing the need for multiple cards and minimizing energy consumption.
Implementation Method 1
The outer casing includes a layer of electromagnetic shielding material. The outer casing is configured to shield the plurality of RFID tags from being scanned
Implementation Method 2
Radio Frequency Identification (RFID) device... configured to selectively expose one of the plurality of RFID tags for being scanned
Data Source
AI summary
A wearable multi Radio Frequency Identification (RFID) device is disclosed. The wearable multi RFID device includes a container that includes an inner housing that further includes a plurality of fixed slots configured to receive a plurality of RFID tags. The container further includes an outer casing that at least partially encloses the inner housing circumferentially and is configured to slide around the inner housing in the container. The outer casing includes a layer of electromagnetic shielding material. The outer casing is further configured to shield the plurality of RFID tags from being scanned, at a first position and selectively expose one of the plurality of RFID tags for being scanned, at an associated second position from a plurality of second positions, based on mapping with at least one criterion defined by a user.