Forget hand-written signs saying "NO BOYS ALLOWED!" Kids today can program their own security system to keep intruders out and their friends in. Room Defender teaches basic computer programming skills as kids record messages, create programs, and warn trespassers (like their little brother or sister) to KEEP OUT! Programmers grant access to their room by giving their friends and family secret codes and key cards. The universal mount attaches to any bedroom door with double-sided tape (included). No passcode or key card? Flashing lights let potential intruders know that Room Defender is armed and will set of sirens if the door opens.