Animated gifs in web pages which only animate if a webcam is plugged in, and only if they detect that no-one is looking directly at them.-- bibliotaphist, Jul 16 2014 Truly excellent +
How about other animations that do rude things when no one is looking?-- DenholmRicshaw, Jul 16 2014 This is... brilliant.
One problem: can a web browser access your webcam?-- MaxwellBuchanan, Jul 16 2014 [MaxwellBuchanan], almost certainly. But not directly; you would have to plug in something like Java or ActiveX, applications that can link a browser to everything in a computer system that the browser's built-in security model forbids accessing. That's why Java and ActiveX are associated with security risks, of course!-- Vernon, Jul 17 2014 This might startle me. Yay. +-- blissmiss, Jul 17 2014 random, halfbakery