T is an old interrogation tool and a staple of film noir: Lie-detector test load or discharge.But these tests do not need someone to strapping with a machine. Indeed, they may not require the subject of the presence - or awareness - for everyone. And whose use is growing well on criminal investigations.
Increasingly, Lie detector using voice analysis tests of stress, a technology that has existed for decades but has gained in popularity because the software in his heart remains evolved.
“It can really be done anywhere,” said Detective Pat Kemper of Springfield Township Police Department in Ohio, he said, voice-based tests in question, thousands of suspects over the past ten years. “It can be done by phone on a disc. It can be done face down. You can use it for everything. ”
In fact, their applications in the crackdown, supporters of voice technology-based see their usefulness in all that telemarketing Match Making. In the United Kingdom, a growing number of insurance companies were to screen telephone claims in the hope of the fight against fraud - a goal they say have been made, both in the detection of fraud and deterrence. One insurer, Admiral, says 25 percent of the auto-theft claims have been withdrawn since it began with the system a year ago.
But the reliability of the technology is still debated, and their migration from the interrogation of space in call centres, fears concerning the possible effects on privacy. Voice analysis of this type, after all, can easily be done without the loudspeakers placed at the disposal of knowledge. Now, since it is used in the insurance sector, for example, concerns, as a suspect likely to prejudice a right customer for subsequent applications for insurance.
The engineers of a system, called Computer Voice Stress Analyzer, try for this kind of concern for the control of access to technology. “We only sell the criminal prosecution authorities and the government,” said David Hughes, director of the National Institute for Truth Verification, the company selling the system.