fred coughed up some electrons that declared:

In article , Tim S

One day, when I get fancy, I'd love to put an electronic proximity lock
on, so I can just walk in when laden with shopping.

Nice idea but they just don't make them strong enough.

I wasn't thinking necessarily of a Yale-type electric strike plate: I agree
they are horribly weak.

When I worked at Imperial College, we had an electronic coded proximity lock
on the computer room door, which was secured with a combination of maglock
and electric shoot bolt.

The maglocks aren't invincible (big bloke can shoulder them) and need
permanent power, but the shoot bolt was pretty solid, being buried in the
door.

The only thing with that is it didn't have a physical override from inside,
though it there might be options.

Cheers

Tim