Police certificate
（重定向自Clearance certificate）
A police certificate is an official document issued as a result of a background check by the police or government agency of a country to enumerate any criminal records that the applicant may have. Criminal records may include arrest, conviction, and possibly criminal proceedings A police certificate is also known as good citizen certificate (in Hong Kong), good conduct certificate, police clearance certificate, national police history check (in Australia) or judicial record extracts.