Touch ID / Face ID is a feature that enables login authentication based on fingerprints and Face Identification stored on your Apple iphone device; which is an alternative login mechanism to Citi's User ID and Password. *Biometric authentication methods like Fingerprint Touch ID or facial recognition technology are proprietary to third parties and if you choose to use these methods, you need to do so in accordance with such third parties’ terms and conditions. If you choose to activate the biometric authentication function on the Citi Mobile App, you will enable your biometric data (e.g. fingerprint or facial data) saved on your device to be used to access to the Citi Mobile App. Accordingly, you should not activate the biometric authentication function, and to immediately de-activate such biometric authentication function, if any other person's biometric data is saved, whether now or in the future, on your device.