Wireless Relay Device Time-Limited Access Key Control
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Solution Overview
Problem
There is a need to limit the time period during which a mobile communication terminal can be used as a controller for devices in guest rooms, such as lighting and air conditioning, to prevent unauthorized control after a guest checks out, which is a concern in accommodation facilities and other settings like theme parks and playgrounds.
Innovation Solution
A device with circuitry that performs proximity wireless communication, different wireless communication, and communication with an object device, storing and sending an access key, and only relaying control commands if the received key is valid, ensuring that the mobile communication terminal can only control the object device within a limited time frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mobile communication terminal is provided with functions to be used as a controller, then the ease of operation is improved, but the reliability deteriorates due to unauthorized control after check-out
Solution Approach 1:
The system performs preliminary actions by setting up the control function and access key distribution before the guest actually needs to use the controller. The access key is pre-configured in the object device, and the mobile terminal is pre-enabled with controller functions. This allows the system to later validate the access key and revoke access automatically when the check-out time arrives, thus maintaining both ease of operation and reliability.
Solution Approach 2:
The control authorization is made dynamic rather than static. The mobile communication terminal's controller function is activated temporarily with a time-limited access key, and automatically deactivated after the check-out period. This dynamic approach allows the system to provide ease of operation during the stay while ensuring reliability by automatically revoking access after check-out, preventing unauthorized control.
2Ease of operation
If the mobile communication terminal is allowed to control the object device freely, then the ease of operation is improved, but the object-affected harmful factors increase due to unauthorized access after check-out
Solution Approach 1:
The access key serves as an intermediary mechanism between the mobile communication terminal and the object device. Instead of allowing direct free control, the system requires the mobile terminal to present a valid access key that is verified by the object device. This intermediary authentication mechanism enables easy operation for authorized users while preventing unauthorized control after check-out, thus reducing harmful factors without compromising usability.
3Ease of operation
If the control function is provided without access key validation, then the ease of operation is improved, but the reliability deteriorates due to inability to limit control period
Solution Approach 1:
The object device performs self-service by automatically validating the access key presented by the mobile terminal and automatically revoking control authority when the access key becomes invalid after check-out. This self-service mechanism eliminates the need for manual intervention to limit the control period, maintaining ease of operation while ensuring reliability through automatic authentication and time-limited authorization.
Data Source
AI summary
A device that includes circuitry configured to: perform first communication that is proximity wireless communication with a communication device; perform second communication with the communication device; perform third communication with an object device; store a first access key; send the first access key to the communication device by the first communication; receive a second access key from the communication device; receive a control command for controlling the object device from the communication device; and send the received control command to the object device in the case that the received second access key is determined to be valid.