Self-Detaching Security Tag With Authenticated Pin Release
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Solution Overview
Problem
Current EAS systems lack a convenient method for detaching security tags using mobile POS units, leading to reduced mobility and increased customer burden in retail settings.
Innovation Solution
A self-detaching security tag system that uses a Power Removal Station (PRS) to establish an electrical connection, authenticate a detach command, and actuate an electro-mechanical component to release the pin without human or external mechanical assistance, compatible with existing AM detection and RFID systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a security tag uses a mechanically engaged pin to prevent theft, then theft prevention capability is improved, but the device requires manual assistance for detachment which reduces ease of operation
Solution Approach 1:
The patent replaces the purely mechanical pin engagement system with an electromechanical system. The pin is actuated by a motor driven by a battery, allowing the pin to be automatically retracted into the tag body through electrical power rather than manual mechanical manipulation. This substitution enables automatic detachment while maintaining secure engagement.
Solution Approach 2:
The security tag becomes self-sufficient by incorporating its own power source (battery) and control circuitry. The tag can autonomously retract the pin when authenticated, eliminating the need for external mechanical assistance or manual intervention for detachment. The system serves itself by having the pin return to the engaged position automatically after being actuated.
2Ease of operation
If a security tag incorporates a motor and battery for automatic pin retraction, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent merges the power source (battery), control circuitry, and pin retraction mechanism into a single integrated security tag unit. The battery is positioned within the tag body and electrically connected to the motor, which is directly coupled to the pin. This consolidation eliminates the need for separate external power sources or control devices, reducing overall system complexity despite adding internal components.
Solution Approach 2:
The security tag performs multiple functions within a single device: it provides mechanical engagement through the pin, electrical power through the battery, control logic through the circuitry, and authentication through the integrated control mechanism. This multi-functionality reduces the need for separate specialized components that would increase complexity.
3Ease of operation
If the pin remains in an unengaged position after actuation, then ease of removal is improved, but theft prevention capability deteriorates
Solution Approach 1:
The patent implements periodic action through the pin's cyclical movement between engaged and unengaged positions. After being actuated to the unengaged position for removal, the pin automatically returns to the engaged position through the motor's reverse operation powered by the battery. This periodic engagement-disengagement cycle maintains security while allowing controlled removal when needed.
Solution Approach 2:
The pin automatically returns to its secure engaged position without external intervention. The battery-powered motor autonomously reverses direction to retract the pin after it has been extended, ensuring the security tag恢复到 its protective state. This self-service mechanism ensures continuous theft prevention capability.
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, hands-free detachment of security tags at the point of sale, enhancing mobility and convenience in retail transactions without the need for dedicated detacher units.
Implementation Method 1
a battery-powered motor to actuate the pin from an engaged position, in which the pin prevents removal of the tag from the article of clothing, to an unengaged position
Data Source
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AI summary
Systems and methods for operating a security tag. The methods involve: establishing an electrical connection between the security tag and an external Power Removal Station ("PRS"); performing operations by the security tag to authenticate a detach command sent from the external PRS; allowing power to be supplied from the external PRS to an electro¬ mechanical component of the security tag when the detach command is authenticated; and actuating the electro-mechanical component so that a pin of the security tag transitions from an engaged position to an unengaged position without any human assistance or mechanical assistance by a device external to the security tag.