Hacking is one of the minigames in Grand Theft Auto: Chinatown Wars that takes advantage of the touch screen controls.

The hacking minigame is one of the elements of Grand Theft Auto: Chinatown Wars that takes advantage of the Nintendo DS touch screen controls. When players encounter a locked terminal or key pad they can enter the hacking minigame. The game starts with the player tapping on the screen to break open the terminal. Once inside, the player must trace the appropriate routes on the circuit board to complete the hack and unlock whatever area they were trying to unlock.GameTrailers: Grand Theft Auto: Chinatown Wars Hacking Gameplay Footage

Grand Theft Auto: Chinatown Wars is the first game from the Grand Theft Auto series to make an appearance on the DS. In an interview with GameSpot, the developers said one of the reasons its taken so long for the game to make its way to the DS is the sheer challenge associated with developing a game for the platform. The developers also wanted to make sure that anything they did would be able to stand up to the huge stories and depth of the console versions.

This is essentially the reason why we've moved onto DS, it was the challenge that we knew it would be. After learning everything we had learned from Vice City Stories and Liberty City Stories, we finally felt like it was time to step up and push ourselves even harder with this game, using a team that nearly doubles the size of anything we've worked on before, said Gordon Hall, the president of Rockstar Leeds, the division that developed Chinatown Wars.GameSpot: Grand Theft Auto: Chinatown Wars Q & A