Sheet Dispenser Authentication Using Phosphorescent Roll Signatures
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Solution Overview
Problem
Existing sheet product dispensers lack the capability to distinguish between authorized and unauthorized products, leading to unreliable operation and potential misuse, as they often disable when unauthorized products are used, which can negatively impact user experience and brand reputation.
Innovation Solution
The implementation of a system that uses phosphorescent pigments with defined intensity signatures on the sheet product core, detected by a sensor and processor, to authenticate authorized products and enable or disable dispensing accordingly, while also managing battery power to prevent unauthorized dispensing when low.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock-out scheme is used to disable the dispenser when unauthorized sheet product is detected, then the reliability of product authentication is improved, but the user experience deteriorates due to the appearance of unreliability
Solution Approach 1:
Instead of disabling the dispenser when unauthorized product is detected (lock-out), the system inverts the approach by continuing to operate and using dispensing behavior patterns to identify unauthorized product. The system monitors whether the dispensed amount matches expected values, and only then determines if product is unauthorized, avoiding the negative user experience of immediate lock-out while maintaining authentication reliability.
2Ease of operation
If the dispenser continues to operate with unauthorized product, then the user experience is maintained, but the ability to prevent misuse deteriorates
Solution Approach 1:
The system implements feedback by monitoring the actual amount of product dispensed and comparing it to expected dispensing amounts. This feedback loop allows the system to continuously verify product authorization during operation, maintaining user experience while preventing misuse through data-driven detection rather than preemptive lock-out.
Solution Approach 2:
The system performs preliminary verification by tracking dispensing patterns and accumulating data about the product before making a final determination of authorization. This preliminary action phase allows the dispenser to operate smoothly while gathering evidence, balancing user experience with misuse prevention.
3Reliability
If battery power is monitored to prevent unauthorized dispensing, then the reliability of dispensing control is improved, but the device complexity increases
Solution Approach 1:
The battery monitoring system serves multiple functions: it tracks power levels for operational reliability and simultaneously acts as part of the unauthorized product detection system. By making the battery monitoring multi-functional, the system improves dispensing control reliability without proportionally increasing complexity, as the same hardware supports multiple detection goals.
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
This solution effectively discourages the use of unauthorized products by ensuring only authorized products are dispensed, maintaining user trust and brand reputation by preventing excessive or inadequate dispensing, and avoiding unintended operation due to low battery conditions.
Implementation Method 1
the core includes at least one reference indication containing a phosphorescent pigment having a defined intensity signature
Data Source
AI summary
An electronic sheet product dispenser includes a support for a roll of sheet product having a reference indication, a sensor, a battery, a feed mechanism, and a processor. The sensor is responsive to detect the reference indication on the roll, wherein the reference indication is associated with authorized use of the sheet product in the dispenser. The processor is responsive to executable instructions when executed on the processor for performing the method of: determining whether an unauthorized sheet product is disposed in the dispenser, and enabling an unauthorized roll procedure in response to presence of an unauthorized sheet product being detected; and, in response to receiving a low battery warning of the battery, and conditional on an unauthorized roll procedure being enabled, disabling the unauthorized roll procedure and proceeding with responding to a product dispense request to dispense the sheet product out of the dispenser on command.