Index cards regarding various passwords used by students in universities are handed to a volunteer. The volunteer thinks of one of the passwords and keeps all the index cards with their password on.
Nothing is written down. Your back is turned during this process.
You instruct them to visualize their secret password in their mind. Through what appears to be contact mind reading, you are able to steal the password from their mind!
This is a direct effect, with a simple method and strong premise. Ideal for any beginner or regular performer. Easily adaptable for other contexts and presentations.