USB Emergency Bracelets

Has anyone had any positive or negative experience with a USB medic alert? I read on another forum that many paramedics and hospitals won’t use them because they are afraid they will infect their computer systems. It seems like great technology, but if paramedics and docs won’t use it them what’s the point? I just don’t want to spend the money if it’s not going to be used.

I am curious as well since I was looking at getting one too.