So instead of memorizing numbers and letters, I will have to memorize color sequences? Say what? That's what designer Cheng-Li Hung has in mind when he designed the Rubik's cube as a security devise.
The color combinations are immense and you can even customize the little windows on the cubes with tiny pictures. Furthermore, the cube can be set up to add a time constraint to prevent trespassers from just parking their butts on your couch (with a six pack) to try and guess the color combination to your PC while playing with a Rubik's cube. Now whenever you need to identify yourself to access your computer, instead of typing the usual text on the keyboard, you will instead need to solve the cube's pre-programmed color scheme and presto!
How is that easier than numbers and letters? I would love to read some opinions.