Biometric features are derived from security data associated with a subject. The security data is obtained from a security device. A biometric value is calculated from the biometric features. The biometric value is anonymized to an identifier associated with the subject. The identifier is integrated with event data associated with a security system. In an embodiment, the security device is a Personal Identification Number (PIN) pad integrated into a transaction terminal, the security data is fingerprint data, which is read from a finger of the subject placed on a fingerprint reader integrated into the PIN pad, and the biometric value is a PIN calculated from fingerprint data during a transaction at the transaction terminal. In an embodiment, the security device is a security camera, the security data is a secure video stream, and the biometric features are facial features of the subject in the secure video stream.