Tucson: The US Department of Homeland Security is testing an advanced technology whereby an "avatar" agent interviews some Mexican visitors when they cross the border at one checkpoint in Arizona. The programme - if successful - could be implemented throughout the country. People who enter the country at the Nogales, Arizona, border crossing point have the chance to be "interviewed" by a virtual multilingual agent with black hair wearing a white shirt and black tie. The virtual agent interviews people enrolling in the "Trusted Traveler" programme, which allows pre-approved, low-risk travellers to be fast-tracked through security. To become part of this programme, applicants must pass a meticulous review of their identity documentation and criminal record. Those who are accepted can be interviewed by the Automated Virtual Agent for Truth Assessments in Real-Time, or AVATAR, which was designed by scientists and researchers at the University of Arizona in Tucson. The virtual agent interviews the applicants at a kiosk, very similar to an ATM, and can ask questions in English, Spanish or Russian. Although not classified as a lie detector, AVATAR can indicate to human authorities if abnormalities exist in the applicants' answers such as long pauses or changes in tone of voice. "The avatar does not analyze the responses themselves, but rather how these responses sound, the voice changes," Mark Grimes, one of the researchers at the UA Center for Excellence in Science and Technology working on the project, told EFE.