EASY TO DO! This is a fully functional marker. Carry this Sharpie marker in your pocket and be ready to twist a key in a moments notice, any time, anywhere.
Get the spectator to sign a key. Twist in a second.
No switches, nothing added, nothing taken away.
Do it right in front of their noses and they will have no idea how it happened.
And yes, the ink is refillable. Includes instructional CD.
We will even throw in a key!