How about having a workbench or desk with a variable height that automatically adjust, based on a touch of your fingerprint?
Depending on the current task its in general some nice feature to have an desk with the capability to flexible adjust the height.
There allready a couple of products out there, stuffed with motors and electronic control.
But imagine a shared working environment, where several colleagues share workbenches/ desks and would like to have their individual height fixed to a certain postion, or even want easily toggle between their optimal height for sitting operations or for standing in front.
How about hacking those electronic control, so that a specific height can be stored to the fingerprint of each individual and furtheron become recalled and applied just by the touch of that finger.
As each persons hand has up to 10 individual fingerprints, this concept allows for each person to have stored up to 10 personal individual heights (where at least 2 make sense for sitting and standing).
Some time ago I played around with an GT-511C1R sensor, which is quite small, not to expansive and easy to programm (their are arduino compatible libraries available).
An easy to use interface should have the typical two buttons for UP and DOWN height adjustment, one additional tactile switch to initialize the store procedure and of course the fingerprint sensor to teach fingerprints and furtheron get identified for automatic height adjustment.
This would also make a nice enhancement in Ben Hecks workshop.
Regards
Stefan