Police ID is an identification system used by law enforcement officers to identify themselves and their authority. It usually consists of a BADGE, which is a metal or plastic emblem that is worn on the uniform of the officer. The BADGE typically contains the name of the agency, the officer's rank, and a unique number. In addition to the BADGE, police officers may also carry an ID card with their photo, name, and other information. This system helps to ensure that officers are properly identified and can be held accountable for their actions.