Requires no skill.... you'll be so wowwwd once you know the secret. Not an impression device like steam or psypher. This was a concept by Criss Angel sadly no Credit to him but this requires no switch, sharpie ink can be refilled just like any regular sharpie so no worries about refills , comes with a PDF link to get that voodoo shirt made yourself if you choose, resets in seconds , comes with 2 extra gimmicks plus the one included: look at my review, the only one on mental pen page here at PM. Any further questions feel free to reach out
Stay magical ✨♠️,
🔥Andrew Ace🔥