players unable to read. Also, the touchscreen interface was designed to encourage players to use their fingers rather than the stylus to manipulate the screen. Though most of the graphics in Diamond and Pearl are 2D, some of the background elements are 3D. The decision to retain 2D graphics in Diamond and Pearl drew criticism; in response, Tsunekazu Ishihara said that "we wanted to maintain the original idea of Pokémon being a game that you played on this big map" and explained that physically, the games were in three dimensions but was designed to "maintain the original feel of the game". Responding to criticism over the use of Friend Codes in the games, Ishihara explained that it was a security measure taken to ensure that players would not be able to chat with strangers over the Wi-Fi connection. Nintendo released a statement detailing glitches found in Japanese releases of Diamond and Pearl. The glitches caused players to be stuck in an in-game wall or lose saved data. Nintendo released patches to certain retailers in Japan to fix these glitches. Beta In mid 2020, dataminers leaked the source code for Diamond and Pearl, revealing a collection of unused sprites and scrapped designs for new Pokémon. They were first leaked onto ResetEra, and were part of a series of Nintendo-related leaks of unfinished builds of games in development. Release Development of Pokémon Diamond and Pearl was announced at a Nintendo press conference in the fourth calendar quarter of 2004 alongside the reveal of Pokémon Dash and details on the Japanese launch of the Nintendo DS. Masuda stated it would "become a new type of game that offers a number of new forms of play" and that he was determined to create "the ultimate [Pokémon] version". Though Diamond and Pearl were expected to be released in Japan by 2005, Nintendo revealed that the developers were still working on aspects of the gameplay and that the games would not be released until 2006. The company said that Diamond and Pearl would be able to communicate with Pokémon games for the Game Boy Advance, allowing players to transfer their Pokémon to the new games. Nintendo also announced that the games would make full use of the Wi-Fi capabilities of the DS, allowing 16 players to communicate wirelessly at one time. Further information concerning the games was not released until mid-2006, when Nintendo President Satoru Iwata