Persuasive design

Two intriguing examples of persuasive design encountered at ENSCI in Paris: Incentive

The first one, next to the stairs, is an invitation to use the staircase as opposed to the elevator so "harden your butt".


The second is a sticker that someone have put on the toilet hand dryer. It says "What's the largest contributor to global warming?" with two answers: "Dry one's hand with a tissue?" and "Press a button?".

Subtle cueing to invite for behavioral changes.