Identification (noun)

1. The action of identifying someone or something.
2. The process of proving or establishing who or what someone or something is.
3. A document or card bearing a person's name, photograph, and other personal details, used as a means of identification.

Origin:

Late 19th century: from identify, on the pattern of words such as verification.

Examples:

1. The police asked for identification before allowing him to enter the crime scene.
2. The identification process included fingerprint analysis and facial recognition software.
3. A driver's license is a common form of identification in the United States.
4. She was unable to travel because she left her identification at home.
5. The identification of the remains was done using DNA analysis.