Watching their video, it actually looks pretty cool for those who might want or need such things. With some imagination I could see some potential uses. Locally we have had a few unmarked take home cars broken into and the occasional rifle or SMG gone missing for a bit. I suppose a proximity trigger lock of some kind on a key ring could be useful? Not sure of that, just thinking about it.
I guess its main value is crippling unsecured guns from house guests and kids. A much cheaper locking pistol box would do the same thing. I don't really need to secure my guns from my kids, when they come over they are always carrying their own anyway :-)
Overall, I don't like the idea of these kinds of things much...too much room for failure and problems and if they become commonplace, they will likely be required by someone. Still, the technology is cool
Upside for me is that most of this stuff is going to be made, at first, for Glocks. I don't have Glocks, so until they make them for my old-guy, discontinued guns, I can't get one. Just one more reason not to have a Glock...