Not sure how many ppl here travel to Australia, but got this:
Beginning November 01, 2012 Australian Customs and Border Protection will allow eligible U.S. Trusted Travelers to use Australia's automated border processing system, SmartGate, on a trial basis. SmartGate performs the customs and immigration checks usually conducted by an Australian Customs and Border Protection officer. It uses state-of-the-art biometric face recognition and ePassportš technology to securely and efficiently process passengers. Using SmartGate to self-process may be faster than waiting for an Australian Customs and Border Protection officer, particularly during busy travel periods