Paper prototypes on your iPhone

This week a colleague sent me a link to POP App, a new tool for making paper prototypes interactive using your iPhone.

POP allows you to take photos of your paper prototype using the app and then highlight link spots so that users can move between pages.

It's super easy to use, and once you have completed your prototype you can share it with other POP users or with anyone over the internet.

Here's my first project - a cave adventure.
 http://popapp.in/w#!/projects/51cf24d8012b36cb0e0006f7/preview