The Michigan Supreme Court has ruled that police cannot use overly broad warrants to search a person's phone, as this violates the Fourth Amendment. The court found that warrants for digital devices must include specific limitations, allowing access only to information directly tied to the suspected crime. This decision was made in the case of Michael Carson, who was the focus of a theft investigation and had his phone searched without restriction. The court's ruling emphasizes the need for precise and limited digital search warrants.