Australian passports may incorporate voice-recognition and eye-scanning technology as the government looks to expand biometric identification.
Australian passports have included facial recognition technology since 2005, but the government is now investigating "other biometric technologies", according to a request for tender released Monday.
The Department of Foreign Affairs and Trade is searching for companies to fill a new biometrics advisory panel, which will replace the current panel when its tenure expires in March.
The tender document details that the scope of the new panel will be expanded to include additional biometrics, such as voice.
The existing facial recognition system was introduced in a bid to reduce identity fraud and contains images dating as far back as 1999.