Think before telling a lie as your smartphone could soon become a lie detector

NEW DELHI: A scientist at University of Copenhagen has revealed in a research that with the help of a phone one can find out of the user is lying or not.

This scientist has developed a machine learning algorithm which will help identify if a person telling a lie or not by studying the swipe and tap gestures on a smartphone.

The research adds that the dishonest interactions often require more hand movements as compared to the honest ones.


The algorithm developed is called Veritaps which flashed a green check mark when the statement is true. On the other hand, any false or doubtful statement is reported with a red question mark.

Presently, the app is in experimental stage and is only designed for Android smartphones.

As reported by CNET, Aske Mottelson, one of the paper's authors, said "the algorithm's ability to detect lies is comparable to that of a polygraph. However, it has its limits and shouldn't be used in courtrooms or other high-stakes environments."

The CNET report also adds that in one of the study the participants were asked to lie and make a true statement in order to check the colour that will appear on their phones. It was noticed that the liars took more time on an average.

In another similar kind of test, a person received money and was asked to split it in two. So, when the users were given the chance to lie about the amount received they took more time.

The app, according to the scientist, has a similar approach as the polygraph test and it can be a useful and indicative tool.