An innovative approach to authentication

Vidoop, as profiled here is taking an interesting approach to authentication, using the fact that humans are good at identifying and categorizing images. Basically, you select a category of images, and when you go to log in, it presents you with a grid of images, some of which fall into the category you selected. You just type in the codes printed alongside those images, and that is your "password" for that session. While a unique physical device or biometric readout remains the best authentication credential in my mind, this new approach may help to make the "password part" of authenticating a bit less vulnerable.