An injectable chip has been created which can track humans. The human tracking tag is the size of a rice kernel and gets injected inside a human by using a syringe.
The chip costs $4000 with an annual fee of $2200 and helps those lost to be found. The tracking tag emits a signal which when near a receiver the current location of the tracking tag (and person it is inside) can be pinpointed. The idea is good although I am not convinced that I would want to have something injected in to my body.
Via: GizmoWatch