In one week-long study of 30 college students, Hancock observed that the phone was the weapon of choice, enabling 37% of all the lies, versus 27% during face-to-face exchanges, 21% using Instant Messaging and just 14% via email.

FORBES: How To Catch A Liar

Even with the best intentions, commercial exchanges with regulatory powers face the temptation to boost profits by cutting corners.

FORBES: Profit Seeking Pair