From FourthAmendment.com:
In a really strange case, a GPS monitor to track curfew violations of a parolee was left on for 791 days. The parole officers and then other officers watched where he was going to attempt to crack a drug trafficking organization, apparently letting him think they weren’t paying attention. The original parole order was for defendant to wear it for only six months, but it went on for two years and two months and they just watched to see where he was going. The opinion strongly states that this was highly invasive of defendant’s rights, tracking him for so long, but still, the court somehow denies the motion to suppress the tracking information.
Read more on FourthAmendment.com
h/t, Joe Cadillic