I am no fried of biometric`s. Specially not on firearms oder firearm security.
There are plenty of videos on the internet with detailled instructions, how to fake prints with normal household goods.
Also, in my humble opinion, by using the biometric security devices, no matter what type, you give the gungrabbers further ideas, how to complicate gun ownership.
This is happening here in germany, where the discussion is taking place, if biometric securred rods should be mandatory to be put in the barell of the firearms when not in use.
By buying the biometric crap, you give the the ideas and the hint, that you could be comfortable with such additional security (that is only fake security) devices.