In the case of Grady v. North Carolina, Torrey Dale Grady challenged his state's requirement for him to wear a GPS monitoring ankle bracelet as part of his sentence after being convicted as a recidivist sex offender. He argued that this constituted an unreasonable search under the Fourth Amendment. The Supreme Court ruled unanimously in favor of Grady, stating that attaching a device to a person’s body without their consent for the purpose of tracking their movements constitutes a "search" and is subject to Fourth Amendment protections against unreasonable searches and seizures. This ruling clarified that privacy rights extend beyond one's home or property lines, encompassing personal privacy from government intrusion regardless of location.

The Supreme Court case Grady v. North Carolina did not have a dissenting opinion. The court unanimously ruled that requiring a person to wear an ankle monitor 24/7 constitutes a search under the Fourth Amendment, and therefore requires probable cause and a warrant. This decision was made in response to Torrey Dale Grady's challenge of his lifetime GPS monitoring requirement as part of his sentence for being a recidivist sex offender, arguing it violated his constitutional rights against unreasonable searches and seizures.