Touch-Free Finger Sensing using Laser Light for Keys and Keyboards

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Dinesh K. Anvekar et al.


Keys and consoles are used in various authentic connections, particularly human- machine interactions in the present state of art of Human Machine Interfaces (HMI). Automatic Teller Machines (ATMs), Charge/MasterCard machines, and pass-code-based support frameworks are a few cases wherein an individual has to touch the keys to provide a secret code are instructions to the machines. However, in situations such as the new COVID 19 pandemic, it is not desirable for customers to touch the same keys as it may cause easy spreading of chronic infections. There is therefore a need to provide a way to input data by users without physically touching any keys. This need is met in our design by offering a device and method to accomplish key or keyboard operation input operation based on the detection of a user finger with low power the laser light.

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