Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

CardTrack - The Card Tracker スクリーンショット

iPhone

About CardTrack - The Card Tracker

CardTrack is a tool which finds a selected card within a shuffled deck.

* Input the initial order of a deck of cards into CardTrack.
* Have a spectator give the deck a riffle or faro shuffle.
* Have a card selected and replaced into the deck.
* The cards can then be given one or two more riffle/faro shuffles, as well as a brief overhand shuffle.
* CardTrack's algorithms will then attempt to determine which card was selected.

To input the cards into CardTrack, the deck could be switched out and given to an accomplice. You could even perform the effect by mailing the deck to a spectator and having them send it back after following the instructions.

CardTrack works perfectly in conjunction with Martin Eisele's Vision app which will detect the order of the deck using the camera.

Note:
* CardTrack does its best to locate the selected card but may not always be accurate. This depends on the number of shuffles as well as the position of the replaced card. In testing, CardTrack works well with 2-3 riffle shuffles, but has also worked with 4 riffle shuffles + 1 overhand shuffle.
* This app is for entertainment purposes only.