Wired Magazine: Facebook. Twitter. Instagram. World of Warcraft. Angry Birds. The most successful tech products have one thing in common: They're addictive. And users don't get hooked by accident. Just ask Nir Eyal. A Bay Area entrepreneur turned desire guru, Eyal has worked with some of the top tech firms in Silicon Valley, teaching them how to apply the system he developed for engineering habit-forming apps, services, and games.

Wired Magazine: Facebook. Twitter. Instagram. World of Warcraft. Angry Birds. The most successful tech products have one thing in common: They're addictive. And users don't get hooked by accident. Just ask Nir Eyal. A Bay Area entrepreneur turned desire guru, Eyal has worked with some of the top tech firms in Silicon Valley, teaching them how to apply the system he developed for engineering habit-forming apps, services, and games.