This is Signature 2.0. It’s one of my favourite card magic effects to perform to laypeople, and it can now be yours. For free.
What is Signature 2.0? It’s my impromptu take on the Anniversary Waltz plot. Two spectators each select and sign a card. Then, one of the signatures visually transposes to the other card. It’s visual, it’s easy and it’s impromptu. It has been my opener for four years now, the very first effect I do when I want to perform to a group of people.