Stay up to date with notifications from The Independent

Notifications can be managed in browser preferences.

Technology: Lie detector that listens carefully

Charles Arthur,Science Editor
Friday 30 January 1998 19:02 EST
Comments

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

Should politicians and errant husbands worry? An Israeli company has developed a software package which it claims can detect when people are lying, based on tiny variations in frequency of the voice called "microtremors". Called Truster, the package is based on the suggestion that when you know you're lying, the blood vessels leading to the larynx involuntarily constrict, making your voice waver - though not at a frequency the human ear can directly detect.

The company claims that it can work even over a telephone connection, and can detect the difference between surprise, a false statement, "avoidance" and truth.

However, when independent testers tried it earlier this week to analyse Bill Clinton's State of the Union address, the software decided that he was telling the truth - though the nervous politician who preceded him, making his first major TV network speech, was lying through his teeth.

Clearly politicians have more control over their larynxes than the company expected. However, its developer, Amir Leiberman, forecasts it will more generally be used by insurance and credit card companies trying to detect tricksters and fraudulent claims. It was originally developed as a screening technology for sensitive military bases to prevent crime and terrorism. It costs roughly pounds 100.

Join our commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in