Tracking hard core prisoners

We read that so and so prisoner escaped from custody and the cops are after him/her/them. it is so frequent that some time the cops themselves let them go either to encounter them or for other consideration .This leads to unnecessary media hype

My suggestion is to implant a transmitter, once they are convicted . This will emit signal and will enable all authorities to track them , inside and out side the prison. The transmitter can be removed after 10 years of no offence living after release.

This will save lots and lots of trouble for all