It's pretty easy to find in with simple equipment.
Scan all the kids coming by until you get one that has a family rich enough to make it pay. Stuff them in a metalized bag until you get them away from scanners which is not very far.
Remember the chip is not a transmitter....it doesn't send out signals. It's more like a reflector that shapes the reflection into a unique signature, but has to be within feet of the scanner, not miles.
