Cheng-Li Hung designed up a security system that only you know. To secure your computer, just set up a color combination that you only know. “Solve” the cube for your color combo and you’re back in. You can even set a time limit so people can’t just guess. Neat idea, but it’s too impractical to work. It’s not too complicated to use if you learn the rules of a rubik’s cube, which is easy enough to use. For a 6 digit number, they just have to figure out what the number is.”]
Source: https://gizmodo.com/rubiks-cube-security-gadget-looks-too-complicated-to-be-359454