Search and seizure is a procedure used in many civil law and common law legal systems by which police or other authorities and their agents, who, suspecting that a crime has been committed, commence a search of a person's property and confiscate any relevant evidence found in connection to the crime.
Some countries have certain provisions in their constitutions that provide the public with the right to be free from "unreasonable searches and seizures". This right is generally based on the premise that everyone is entitled to a reasonable right to privacy.
Though specific interpretation may vary, this right can often require law enforcement to obtain a search warrant or consent of the owner before engaging in any form of search and seizure. In cases where evidence is seized in a search, that evidence might be rejected by court procedures, such as with a motion to suppress the evidence under the exclusionary rule.