NEW DELHI: Aadhaar will soon include face recognition as a way of verifying users, along with the iris and fingerprint scan, the authority in charge of the national identity card system said today, calling it an extra layer of security. Face authentication will be enabled by July to help people facing difficulty in biometric authentication due to fingerprints worn-out because of age or hard work, or other factors, said the UIDAI or Unique Identification Authority of India in a statement. But the authority clarified that face recognition would be allowed only in fusion mode along with one more authentication factor - either fingerprint or iris or OTP - to verify the Aadhaar card holder. This will not require any new reference data as photos of citizens is already on the Aadhaar database.