Disposable SIM Card with Corrosive Agent for Time-Limited Access
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Solution Overview
Problem
Consumers face inconvenience and recurring costs in maintaining subscription-based mobile communications services, as they need to frequently visit physical stores to activate and re-activate SIM cards for short-term plans, incurring time and expense for both consumers and network operators.
Innovation Solution
The introduction of SIM cards with a corrosive chemical agent that reacts with metallic contact pads in the presence of oxygen, causing them to corrode over time, allowing for time-limited network access without the need for repeated store visits, as the SIM card becomes unusable after a predefined period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If consumers use short-term service plans requiring frequent SIM card re-activation, then network service flexibility is improved, but consumer time and operator overhead costs increase
Solution Approach 1:
The SIM card is designed as a disposable component with a limited operational lifetime. A corrosive chemical agent is embedded within the SIM card that gradually degrades the metallic contact pads over time, rendering the SIM card inoperable after a predetermined period. This allows consumers to simply purchase and activate new SIM cards for each service period without returning to physical stores for re-activation, eliminating the time loss associated with frequent store visits while maintaining service plan flexibility.
2Ease of operation
If SIM cards are designed for long-term use, then consumer convenience is improved, but network security and service control deteriorate
Solution Approach 1:
The SIM card is pre-configured with a corrosive chemical agent that will automatically degrade the metallic contact pads after a predetermined time period. This preliminary action ensures that the SIM card self-terminates service without requiring consumer intervention or network operator action, maintaining both consumer convenience (no active management needed) and network security (automatic service control).
Solution Approach 2:
The SIM card autonomously manages its own service lifecycle through the embedded corrosive chemical agent that automatically degrades the contact pads over time. This self-service mechanism eliminates the need for consumers to manually deactivate cards or return to stores, while ensuring network service control through automatic expiration, thus improving convenience without compromising security.
3Reliability
If physical store activation processes are required for each service period, then service control is improved, but operator overhead costs worsen
Solution Approach 1:
The SIM card autonomously manages its own service lifecycle through the embedded corrosive chemical agent that automatically degrades the contact pads over time. This self-service mechanism eliminates the need for consumers to manually deactivate cards or return to stores, while ensuring network service control through automatic expiration, thus improving convenience without compromising security.
Solution Approach 2:
The activation and deactivation functions are extracted from the physical store environment and embedded directly into the SIM card itself through the corrosive chemical agent. This extraction eliminates the need for repeated physical store visits and manual activation processes, reducing operator overhead costs while maintaining service control through the built-in expiration mechanism.
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 consumers to obtain time-limited mobile communications services without the need for frequent store visits, reducing overhead costs for network operators and allowing for easy renewal by purchasing new SIM cards when the previous one becomes inoperable.
Implementation Method 1
The corrosive chemical agent reacts chemically with the at least one metallic contact pad, in the presence of oxygen, to cause the at least one metallic contact pad to corrode over a period of time.
Data Source
AI summary
A subscriber identity module (SIM) card includes a housing, a printed circuit board contained within the housing, and a plurality of metallic contact pads on a surface of the printed circuit board. At least one contact pad of the plurality of metallic contact pads comprises an enclosed, interior portion. The SIM card further includes a corrosive chemical agent contained within the interior portion. The corrosive chemical agent reacts chemically with the at least one metallic contact pad, in the presence of oxygen, to cause the at least one metallic contact pad to corrode over a period of time.