Contactless Elevator Control via Mobile Code Verification
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Solution Overview
Problem
Existing contactless elevator control methods are costly and insecure, often leading to incorrect operation and manipulation, as they rely on expensive, complex holographic light effects or external devices that can be easily misused.
Innovation Solution
A method that uses a user's own input device to perform a presence check by comparing a key code entered on the device with a server-generated code displayed at the elevator stop, ensuring secure and hygienic operation by only processing destination calls if the user is present, utilizing existing infrastructure and QR codes for easy communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If holographic light effects are used for contactless control, then contactless operation is achieved, but device complexity and cost increase significantly
Solution Approach 1:
The patent introduces a mobile device as an intermediary between the user and the elevator system. The mobile device displays a time-dependent code that the user enters into the elevator's input device, serving as a mediator that enables contactless operation without requiring complex holographic projection systems. This resolves the contradiction by achieving contactless operation through a simple code transmission mechanism rather than complex optical technology.
Solution Approach 2:
The system creates a temporary code copy on the user's mobile device that replicates the authentication function without requiring physical contact with the elevator panel. This code copy can be displayed and transmitted electronically, providing contactless access while avoiding the need for expensive holographic display hardware.
2Ease of operation
If external input devices like smartphones are used for control, then contactless operation is enabled, but security and reliability decrease due to easy manipulation
Solution Approach 1:
The system performs preliminary actions by generating and displaying a time-dependent code on the mobile device before the user enters it into the elevator system. This pre-generated code is valid only for a specific time window and must be entered promptly, preventing delayed or unauthorized manipulation. The time-critical nature of the code ensures that even if the mobile device is compromised, the window for exploitation is limited.
Solution Approach 2:
The system changes the parameter of time validity for the control code. The code is generated with a specific time dependency and expires after a predetermined period. This time parameter change ensures that the code cannot be reused or manipulated after expiration, significantly enhancing security while maintaining contactless operation convenience.
3Reliability
If presence verification is implemented, then system security is improved, but operation time and complexity increase
Solution Approach 1:
The patent merges the presence verification process with the existing code entry process. The time-dependent code itself serves as the presence verification mechanism - the user must be physically present at the elevator to observe and enter the code in real-time. This combines authentication and presence verification into a single action, improving security without adding separate verification steps or significant time delays.
Data Source
AI summary
The present invention relates to a method for the contactless control of an elevator system comprising at least one elevator with an elevator car that travels between at least two stops and a system control unit, wherein a display device is arranged at each stop and is connected to the system control unit, and wherein the system control unit is connected to an internet-connected server such that users of the elevator system can enter a destination request into a mobile input device connected to the internet and transmit it via the internet to the server and from there to the system control unit. According to the invention, the destination request of a user is only executed by the elevator system if a presence check of the user at a stop has been successfully performed beforehand.Furthermore, the invention also relates to an elevator system designed in such a way that such a method can be carried out using an external mobile and internet-enabled terminal device owned by a user of the elevator system.