How do you use identity in a sentence of noun?

The noun 'identity' will function as the subject of a sentence or a clause, and as the object of a verb or a preposition. Examples:

The identity of the victim has not been determined. (subject of the sentence)

John Doe, the identity used, is not his real name. (subject of a clause)

He has a temporary identity at the moment. (direct object of the verb 'has')

His fingerprints should be the key to his identity. (object of the preposition 'to')