An impossible card location by Francesco Ceriani

Impossible - An impossible card location by Francesco Ceriani
Imagine to have two regular deck of cards.
The spectator can freely name one of them (no force), cut the deck, remember the choosen card and lose it. No control on the deck by the performer.
Despite this, you will be able to tell the position of the spectator's card in the other deck never touched before.

!Key Points!
Two regular deck of cards
Completely self working
No sleight of hand
No memory working