Let me think of your number.
Mind Readers. Claim that they have superpowers. (Mostly they don't.) After that, I think about computers. Use a lot of technology to find out who you are.
Now here is the task! Go take this quiz. Before, think of a number that is between 1 and 10. (1 and 10 are numbers) After, take the quiz to amazingly get brainwashed!