Jan 13, 2014 - Scientists at University College London have released the latest crowdsourcing happiness experiment. Pocket Smile 1.2, a simple iPhone app, spreads smiles to boost happiness and tracks mood changes with questionnaires. The smiling faces are designed to directly enter the emotional brain. Researchers have previously found such images to activate a subconscious "empathic response", automatically evoking happiness. Join this fun iOS app experiment to find out if smiling is enough to make you happy.