Think about it. If you put one of these things around your kid's neck when it is first born (preferably after it's been hosed off and dried out a bit, as those things are disgusting when they first enter this world) it is never going to know any different. It is going to think that this is how life is. Everything I do will be on my magical/evil pendant which I am beholden to wear until the day I croak (probably from killing myself because I just can't take the constant monitoring any more.) It'd be like that movie The Truman Show only you'd know what was going on (unlike Jim Carrey who took most of the movie to figure out that his life was a lie full of lying liars and that he was probably the only one not getting paid for that fiasco).
It won't be like before where she would have to look high and low for you like you were some Tickle Me Elmo doll at Christmas time when that sort of thing was hot and in short supply. Everywhere that she'd hear that you were, she'd go there and you wouldn't be there. Then she'd just repeat that exercise over and over until she found some other guy to get drunk and play beer pong with. But she'll have pictures of you now. Detailed pictures. And I would have to imagine that you'd have detailed photos of her. Defiled and all. Ugh. Not good. Not good at all!
And if you think that these folks are just going to stop at photos, I'd guess that you'd be wrong. Wait until these things come with sound recording capability. Then everything that you say will be preserved for time and all eternity as well! Oh, joy! I've never said anything stupid in my life, so that will be just fine! Or not.