When creating a new account on a website, or posting a comment online — you’re sometimes requested to type a "password" that is written against a grid in a font that is extremely difficult to read.
The purpose of this "password" is to determine if YOU are actually a human (as opposed to a hacker’s script creating bogus accounts, or leaving spam comments).
Microsoft has created ASIRRA (Animal Species Image Recognition for Restricting Access) "a human interactive proof that asks users to identify photos of cats and dogs."
This technology can easily be added to any website — it’s SO much easier that attempting to read those "password" — plus . . . who doesn’t love cats? (^_^)