The machine is being tested at a Moscow airport and will cost between $10,000 and $30,000. Unlike a regular polygraph, it works without physical contact with people. Its voice analyzer picks up uncontrollable tremors in a voice, according to the inventors at the Israeli company Nemesysco, and can catch emotions such as fear and love.



Amir Liberman, the company's chief executive officer, developed the technology for military and insurance claim uses. He said the first stage of the test takes between 30-75 seconds. If the machine casts doubt on the subject, the suspect is taken aside by guards for an intensive search and questioning.



Liberman, a mathematician, added that natural anxiety among airline passenger causes about 12 percent of passengers to show stress. "Some may feel nervous because they have used drugs, while having no intention to smuggle drugs," he said. "The whole thing is performed in a low-key manner to avoid causing anxiety."



An American company, V Entertainment, said the Nemesysco technology is able to measure emotions "like anxiety, fear or even love."



The device includes a signal-processing engine that analyzes incoming voice waveforms and detects levels of emotional states according to the pitch and speed of voices.



American firms last year found the machine to be accurate up to 90 percent, and in a recent test, it caught the one person out of 500 who was planning an illegal act, Liberman said.