Delaware’s Supreme Court has rejected a challenge from the American Civil Liberties Union to a law requiring GPS monitoring of certain sex offenders who have been released from prison and are on probation.

After hearing arguments Wednesday, the court issued a two-sentence order Friday upholding a Chancery Court decision in favor of the state.

The ACLU sued on behalf of three high-risk sex offenders, including a rapist and a female accomplice to rape and sodomy. They complained that wearing GPS monitors was embarrassing, sometimes painful and an invasion of privacy. The ACLU said the monitoring amounted to an unconstitutional search under the Fourth Amendment.