What is a casual smartphone whose cards see through something to win at poker?

In card games such as poker with money, cheat acts are inherent. On the latest cheat terminal using smart phones, we realize the horrifying way that smartphones that next draw cards put something on the desk will make it naked.

Full (er) House: Exposing high-end poker cheating devices
https://www.elie.net/blog/security/fuller-house-exposing-high-end-poker-cheating-devices

Erie Braustein found cards & devices for 'cheat poker' sold in sets on Chinese sites. As far as the notation of the site is concerned, it is surprisingly said that the price was about 5000 euros (about 560,000 yen) with the content that card information can be illegally acquired by reading with a special terminal .


Mr. Braustein thought that the price was too high, but I wanted to know how precise it is with what kind of mechanism, mediated by a acquaintance in China, and a supplier who manufactures "cheap poker set" Successfully taking contact. The price was decided to be sold directly at $ 1,300 (about 140,000 yen).

And a special card set and one smartphone sent from China. Mr. Braustain does not reveal the name of the model, but from the information of the terminal design and "having 8 GB storage and 1 GB memory" from Samsung's "Galaxy CoreIt is considered to be.


Android was installed on smartphones, but the Chinese version of "Android 4.2.2" custom OS was installed. And, among various applications, the cheat app called "Game" was preinstalled.


When you start the Game application, the password entry screen will be displayed. In addition, the custom OS has deleted ADB server and it is remodeled to specification which can not shoot screenshot in teating mode.


When entering the user ID / password informed from the manufacturer, the main screen is displayed.


In "Game Hall", basic operation explanation and games supported by the terminal are displayed.


Not limited to poker, it is said to correspond to hundreds of games.


The dedicated terminal is equipped with an IR LED (infrared LED is mounted on the side).


A state taken by an infrared camera. With the naked eye it is impossible to feel even if the IR LED is lit.


With this IR LED it is possible to "see through" the card by reading the pattern of the edge part of the card.


A mechanism that reads card information with a terminal placed randomly on the table.


You can check how to read card information with a cheat poker set in the following movie.

Poker analyzer basic demo - YouTube


A card that we all listened. Of course it is for a cash card.


Shuffle the card ......


Putting it on the desk ......


The casualty terminal read "two spades ace, diamond jack" and two cards from the top.


Turning over the card is true. From the mountain of cards placed randomly, I succeeded in spectacular reading of the two kinds.


The cheat card looks like a trump you do not fancy at all.


However, a cord which can be read only with the IR LED is inscribed on the edge part, so that information can be obtained from the stacked cards.


Although it was made to read aloud by a movie, in an actual game, information is displayed on the screen.


In addition, in order to give a sense of confidence to the opponent of the game, the cards will be sent unopened.


Mr. Braustain decomposed the terminal, and it seems that it was confirmed that an IR LED camera and a dedicated custom chip were added inside.


According to Mr. Brazztei, the cheat terminal is quickly reading the code on the side of the card and it is necessary to decode the data at high speed, so the recognition algorithm of the application is written in C to emphasize the speed. Also, due to limitation of camera performance, cautions are pointed out that it is necessary to move the terminal within 30 cm.