The center of the controller also features a touch screen. However, unlike the DualShock 4 from PlayStation, it is actually a high-resolution screen, not just a trackpad. Like the DS4, the screen is also clickable. Additionally, because Valve doesn't want to distract players with the screen, a display will be overlayed on the TV whenever the player touches the screen. Obviously, the controller will work on any PC, not just "Steam Machines." However, prototype controllers will ship with the 300 beta units Valve plans on shipping later this year. Early versions of the controller won't be wireless and they won't include the touch screen. Surprisingly, the controller does not feature support for biometric data, in spite of Valve's keen interest in it. "Biometrics on the other hand is essentially adding more communication bandwidth between the game and the person playing it, especially in ways the player isn't necessarily conscious of. Biometrics gives us more visibility," Newell said earlier this year. The Steam Controller has not been priced.
An example of how the controller can be mapped