Read on to find out how this critical law can make a difference in your criminal case. The Fourth Amendment's rule against unreasonable searches and seizures mean the police cannot search you or your vehicle unless one of the following is true.The Fourth Amendment does not give individuals an absolute right to privacy; neither does it prohibit all searches. Their Right to be Free from Unreasonable Searches and Seizures? The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated. Constitution of the United States. The Fourth Amendment establishes constitutional limits on police power. 106. Like. However, the Supreme Court has carved out numerous exceptions to the warrant requirement, as explained below. Police Discretion, 72 ST. JOHN'S L. REV. Not all of the app data on phones are stored on the phone itself.