RFID Anti-Theft Tag with Counting Chip
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Solution Overview
Problem
Current RFID inventory systems fail to accurately detect the theft of items when an RFID tag is left on premises but the associated item is stolen, leading to false conclusions due to the tag's presence being misinterpreted as the item still being on the premises.
Innovation Solution
An inventory and anti-theft alarm system utilizing RFID technology with a unique rolling sequence of logical events, where each alarm tag includes an encoded RFID inlay, an RF transmitter, a 'counting/cut' chip, and a locking mechanism to monitor and record sequential events, ensuring proper logical sequencing and alerting potential theft through a master database.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RFID inventory scans are performed using traditional RFID handheld devices or antenna arrays, then the system can locate RFID tags, but it fails to detect when the tagged item is stolen because the tag itself remains on premises
Solution Approach 1:
The system divides the RFID tag into functionally independent components: the passive RFID inlay (for location tracking) and the active alarm tag with counting chip (for event monitoring). This segmentation allows the alarm tag to independently monitor and report locking/unlocking events, providing reliable theft detection even when the passive tag remains on premises.
Solution Approach 2:
The alarm tag acts as an intermediary device between the item and the inventory system. It monitors the locking mechanism state and provides authenticated event data to the inventory system, enabling accurate distinction between legitimate item movement and theft.
2Reliability
If the system monitors locking and unlocking events continuously, then it can provide real-time theft detection, but the system complexity increases due to additional components and event tracking mechanisms
Solution Approach 1:
The system merges the passive RFID inlay and active alarm tag into a single integrated alarm tag assembly. This combination allows the system to leverage existing RFID infrastructure while adding monitoring capabilities, reducing overall system complexity compared to using separate systems.
Solution Approach 2:
The alarm tag autonomously monitors its own locking mechanism state and generates event records without requiring external intervention. The counting chip automatically tracks locking/unlocking events and transmits data to the inventory system, eliminating the need for complex external monitoring infrastructure.
3Measurement precision
If the alarm tag includes a counting chip to track locking/unlocking events, then the system can identify out-of-sequence events indicating potential theft, but the manufacturing complexity of the tag increases
Solution Approach 1:
The counting chip provides dynamic event tracking that adapts to different locking/unlocking scenarios. It automatically records sequence numbers for each event, enabling the system to detect anomalies without requiring complex manufacturing processes or custom tag designs for each application.
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
The system provides real-time or near-real-time status on the locking and unlocking of items, accurately identifying their presence and location, and alerts personnel of potential theft by tracking out-of-sequence events, thereby preventing false inventory conclusions and enhancing security.
Implementation Method 1
The present invention relates to an inventory and anti-theft alarm system using Radio Frequency Identification, aka 'RFID'
Implementation Method 2
a locking mechanism having a pressure sensor, the counting chip being activated when the locking mechanism is in a locked position
Data Source
AI summary
An inventory and anti-theft alarm tag system that includes at least one RFID tag including an RFID transmitter, a counting chip and a locking mechanism having a pressure sensor. The counting chip can be activated when the locking mechanism is in a locked position. The inventory and anti-theft alarm tag system also includes a master database for communication between the at least one RFID tag and the master database via the RFID transmitter. The at least one RFID tag transmitting counting chip information to the master database. The counting chip information including an open position in response to pressure being applied to the pressure sensor. The master database tracking a logical sequence of the counting chip information for the at least one RFID tag, and, if the counting chip information is out of logical sequence, the master database sends an alert.