Anti-Unwanted Guest

Makers: Elizabeth "Lizzie" Clarke
Mentors: Kristan Hutchison, Becci Danford
Website: http://www.facebook.com/imagination4kids

I have two sisters that are always going into my room, so I wanted to make a lock that is electronic. I first wanted to use a key card, but that was too difficult, so I changed it to a code. When you press down the right buttons it completes the circuit, but when you press the wrong ones you have to restart.