The blade is saved. The blade stops by use of a "proximity sensor".

Interesting technology but I can tell you from personal experience that
stopping in about 1 second is not nearly fast enought to prevent bad
cut.

It uses a "proximity sensor". It's not 1 sec after you touch the
blade. It's one second after you "are too close" to the blade.

Which is about a half second after you loose your fingers...