I agree that it is the parent's responsibility to keep tabs on their child, and I've never had it happen that I didn't know where my children were, but sometimes things happen that are beyond our control. And I'm not talking about kidnappers but a situation where my child is temporarily separated from us for whatever reason. Or say we're in a car accident and all taken to the hospital. There are any number of scenarios where it would be helpful for strangers to know that he's deaf and communicates in sign.
Although a downside pointed out by one of our friends is that if someone did want to kidnap him or do him harm, the bracelet would let them know that he can't easily alert other people that something is wrong.
