Don't bother smiling, ... Scientists can now tell whether you are happy, angry, sad or even envious by using computer software to process brain scans.

Computers don’t know to help when you’re tired, or sad, or frustrated. They don’t steer you away from distractions. They’re oblivious to your happiness.

Computer scientists present smile database Date: July 30, 2012 ... The software takes into account whether someone is happy, sad or angry, and adjusts its estimate accordingly.