Can we use any regular deck or is a gimmicked deck supplied?
If a gimmicked deck is used, is it bikes?

Can the spectator shuffle the deck before the effect?

Not fishing for methods but just looking for effects that would suit my style of performing.

Any help would be greatly appreciated.

You can use a regular Bicycle deck, but gimmicks are involved. The shuffling of the deck isn't even relevant for this effect. In fact the deck itself doesn't really even come into play.

Here's something I just thought of: The back of the red prediction card can be signed by the spectator from the very beginning(before the spectator even thinks of a card) eliminating the possibility of a switch and increasing the impossiblity of the effect ten fold. You'll need to pick up a couple of things to perform it this way on a regular basis, but it can be done.

ZanderMagic,
Did a video demo of Tongue Tied ever get posted anywhere?
Many thanks

Anyone ever see a video demo of this? It's not on John's site.