Well, unless a child molester finds them…
I am a PopSci reader and linked to DCoT via the mag. My family, which includes two VERY energetic boys, five and three, went to Disneyland for a little get-a-way. Before we went I told my wife about the ‘I’m Lost’ program that one can install on a jump drive.
We decided to buy three 32Mb drives, which are a dime a dozen nowadays, one for each boy and one for us with the same program and ’secret phrase’ on it. We also included our cellphone numbers. Two lanyards with dangling USB drives that had a ‘I’m Lost’ label adhered to them and tucked into their shirts later, we had two boys that if got lost would be found and be reunited with us quickly.
So 32mb USB drives are very cheap. And using this system you can put them on a lanyard and give them to your children. If they get lost, the children are instructed to give said drive to the good Samaritan. This person opens up the drive and reads the instructions on the drive. And there is a security pass phrase so the good Samaritan knows the parent is getting their child back.
What a fantastic idea! And very simple to do.