I never could get that feature to work as well.
And, what if someone needing his or her gun in an urgency has an injury to the hand? Sutures, scars, bug bite, bandages? Battery failures can happen. Dirt or scratches on the lens can happen. Might EMP be another concern?
Oh, and remember when there were cars that would not start unless the seatbelts were clicked shut? Lots of bad guys took advantage of drivers trying to get those to work IIRC.
I had to get fingerprinted for a permit I needed. My hands tend to get torn up when I’m working with wood due to eczema. The technician had to reshoot my fingerprints about ten times to get a useable set.
Yea, I’m gonna rush right out and buy a gun with electronic parts and zero record of being a gun company.