Magnetic Security Tag Wireless Deactivation
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Solution Overview
Problem
Current security tag systems lack a convenient method for detaching security tags using mobile POS units, limiting their adoption in retail settings, as they often require dedicated detacher devices or burden customers with post-POS tasks.
Innovation Solution
The development of a Magnetic Attracting (MA) security tag system that can be wirelessly deactivated upon a successful purchase, allowing customers to manually pull apart its MA halves without triggering an alarm, using RFID technology and magnetic reed switches for secure and user-friendly detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid housing with dedicated removal device is used for security tag, then security reliability is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The security tag is divided into two separate magnetic halves that can be independently manipulated. Each half contains magnetic attracting elements, allowing the tag to be secured to an article by placing the article between the halves and maintaining magnetic attraction, while enabling simple manual detachment by pulling the halves apart without requiring a dedicated removal device.
Solution Approach 2:
The traditional mechanical pin-and-housing security tag system is replaced with a magnetic field-based attachment mechanism. The magnetic halves use magnetic attraction forces to secure the article, eliminating the need for mechanical pins, rigid housings, and dedicated removal devices, thereby simplifying the overall system while maintaining security.
2Reliability
If a dedicated detacher device is used for mobile POS, then security reliability is improved, but ease of operation and productivity deteriorate
Solution Approach 1:
The customer performs the security tag detachment themselves as part of the self-checkout process. After purchase verification through the mobile POS device, the customer simply pulls the magnetic halves apart to detach the tag, eliminating the need for store associates or dedicated detacher devices, thereby improving ease of operation and productivity.
Solution Approach 2:
The purchase verification and authorization are completed beforehand through the mobile POS device before the customer detaches the security tag. This preliminary action ensures security requirements are met while allowing the customer to freely detach the tag without requiring additional equipment or assistance.
3Reliability
If fixed detacher unit is used, then security reliability is improved, but mobility and productivity deteriorate
Solution Approach 1:
The fixed mechanical detacher unit is replaced with a portable magnetic security tag system that can be detached anywhere in the store. The magnetic halves allow detachment at any location without requiring a fixed infrastructure, thereby improving productivity by enabling mobile checkout operations throughout the retail environment.
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 secure and convenient self-checkout processes through mobile POS devices, eliminating the need for dedicated detacher devices and ensuring seamless transitions through surveillance zones without alarm activation, while maintaining compatibility with existing EAS and RFID systems.
Implementation Method 1
a magnetic reed switch coupled to the circuit board. The switch is opened by placing the first and second MA halves in proximity to each other.
Implementation Method 2
In an RFID system, a reader transmits a Radio Frequency ("RF") carrier signal to an RFID device. The RFID device responds to the carrier signal with a data signal encoded with information stored by the RFID device.
Implementation Method 3
The security tag may include a magnet and a magnetic reed switch coupled to a circuit board. The switch is opened by placing the first and second MA halves in proximity to each other.
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
Systems and methods for operating a security tag (132, 300). The methods comprise: wirelessly receiving at the security tag a signal sent from a remote device (104, 190); and preventing alarm issuance when first and second Magnetic Attracting ("MA") halves (302, 312, 702, 704) of the security tag are pulled apart by deactivating alarm circuitry (264, 340) internal to the security tag in response to the security tag's reception of the signal.