The Magic Cafe Forums - Card on spectator's back and other similar tricks

Dear folks

I have been performing this for years as a gag especially in magicians get together.

Spectator selects a card, a duplicate card is somewhat fixed to the spectator's back. We ask the spectator to turn his back to other audience and close his eyes and visualize the card and the remaining audience reveals the spectator card.

Love to know who came up with this idea earlier

And love to know what are the other effects in which all the audience knows the secret except the volunteer on stage, please

Like
1. Card on Fore Head
2. Paper balls over head
3. Power of Darkness
4. Selfie Card Trick etc.

“It’s not what you do that matters, or even how you do it;
it’s what the spectators perceive you as doing that matters.
That’s the MAGIC they’ll remember.”