"alan_m" wrote in message
...
On 22/11/2019 13:28, whisky-dave wrote:

Some devices can the cheaper ones. But why are we seucuring the door from
others is the important thing here, and it;s not like no one has ever
gained access without the correct key to any place, it;s just what effort
you need to take to eliminate such a thing and in most cases I doubt many
people carry a dead finger around with them, or have access to the latex
and a suitable finger.
Face recognicion is another option, I've heard in the USA they are
looking into guns that can only be fired after face recogniction has been
used.
I'm expecting some idiot to blow their own face off.

And possible after all the electronic security the interlock will be a
simple relay contact that can be bypassed with a bit of wire.

Trivial for the system to detect that and not fire then.

The law abiding will use the face recognition while the criminal
fraternity and US kids "borrowing" firearms will look on Youtube and find
the bypass.

Trivial to make it unbypassable.

Much like the popular home safes with an electronic keypad where the lock
relay can be defeated simply by placing a magnet in the top left corner of
the door to trigger the relay.

Trivial to prevent that working too.