A search warrant is a court order authorizing police to search a specific location for evidence of a crime. Under the Canadian Charter of Rights and Freedoms, everyone has the right to be secure against unreasonable search and seizure. Police must generally obtain warrants by showing a judge reasonable grounds to believe evidence will be found. Warrants specify what can be searched and what evidence is sought. Evidence obtained through illegal searches may be excluded from court proceedings. Limited exceptions allow warrantless searches in urgent circumstances. Search warrants protect privacy while enabling legitimate law enforcement—balancing individual rights against society's interest in investigating crime.