Pete Doherty, singer for the English indie rock band Babyshambles, has been ordered to have a medical implant to prevent the use of drugs, according to the Associated Press. Doherty appeared in a Stroud, western England court today where he entered a plea of guilty to heroin possession and driving without a license or insurance.

It is not specified what sort of implant the British state demanded the rock singer receive.

Naltrexone, an opioid receptor antagonist, is often used for heroin addiction. Some practitioners use a naltrexone implant placed in the lower abdomen. The implant has not been shown scientifically to be successful in “curing” the subject of their addiction.

Implants are used for “medication compliance reasons.”