I recently installed one of these latches on a garage door for a very security conscious client (same guy I might install a new opener for, other thread):
I put another opener button over just above it as you need to release the latch before hitting the button or it binds up in an alarming kind of way. He forgets to do so now and then and is worried that he's going to do some damage. I suggested a power cut-out operated by the latch. He likes it and I thought I'd be able to find a normally closed switch easily enough, a switch that would be pushed open by the end of the steel slide bar and spring back to closed whenever the latch is released. I'd route the 110 power through it.
Not finding such a switch readily however.