Mailbox Lock and Proximity Sensing for Secure Package Deposit
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Solution Overview
Problem
Current mail and package delivery systems lack secure access mechanisms and tracking capabilities for deposited items, leaving sensitive data unattended in unsecured public mailboxes and failing to verify if items are deposited within the intended receptacle.
Innovation Solution
A system utilizing proximity sensors and a lock mechanism to securely access and track the deposition of items, allowing authorized delivery personnel and users to unlock deposit boxes using registered sensors, and sending notifications on item status changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If public access mailboxes are used for delivery, then delivery accessibility is improved, but security of deposited items deteriorates
Solution Approach 1:
The system segments access control by using separate proximity sensors for delivery personnel and users, with the lock mechanism selectively responding to authorized sensors. This allows public accessibility for authorized deliveries while preventing unauthorized access, resolving the contradiction between ease of operation and security.
Solution Approach 2:
The lock mechanism acts as an intermediary between the proximity sensors and the deposited items. It mediates access by locking the mailbox when no authorized sensor is detected and unlocking when an authorized sensor is present, thereby maintaining both accessibility and security simultaneously.
2Device complexity
If traditional mailboxes without tracking are used, then device complexity is reduced, but ability to track deposited items deteriorates
Solution Approach 1:
The proximity sensors serve multiple functions: they enable access control for the lock mechanism and simultaneously provide tracking capability by detecting the presence or absence of delivery personnel. This multi-functionality adds tracking capability without proportionally increasing device complexity.
Solution Approach 2:
The system uses the delivery personnel's own proximity sensor (already present on their device) to provide tracking information. The sensor essentially tracks itself by its presence or absence near the mailbox, eliminating the need for separate tracking hardware and maintaining system simplicity while gaining tracking capability.
3Reliability
If proximity sensors and lock mechanisms are added to mailboxes, then security is improved, but device complexity increases
Solution Approach 1:
The system merges the access control function and tracking function into a single integrated mechanism using the proximity sensor and lock mechanism combination. This consolidation achieves enhanced security while minimizing the increase in device complexity by combining multiple functions into unified components.
Data Source
AI summary
A system for securely depositing an item includes: a lock mechanism configured to attach to a deposit box having a door configured to provide elective access to an interior space in the box to selectively block the door from opening and allow the door to open to provide access to the interior space; and a first proximity sensor operatively connected to the lock mechanism to operate the lock mechanism to block the door or allow the door to open, a second proximity sensor configured to be attached to at least one of: a delivery person and a piece of delivery equipment; a third proximity sensor; and a first transmitter operatively connected to the lock mechanism and configured to transmit a signal indicative of operating information regarding the lock mechanism.