Sony PS4 Pad Dual Shock 4 - Wireless Controller

The Dualshock Hardware

The
DualShock 4 displays the same general layout and buttons as past 
DualShock controllers, but now the controller offers additional features
along with new buttons. The most obvious change is the inclusion of a 
wide touchpad where the Select and Start button were; those buttons are 
now replaced with an Options button instead. Sony has mentioned that the
touchpad can respond to up to two fingers at a time, which expands the 
number of possibilities for input to those like you would see on a 
smartphone. In addition, the DualShock 4 sports a 3.5-mm headphone jack 
that supports surround sound along with both an accelerometer and a 
gyroscope, both reported to be better than what is currently included in
the DualShock 3 and Vita.
The two rumble motors can now have varying strength, a change from the 
DualShock 3 where rumble was either active or not. This will create a 
heightened sense of realism in all PlayStation 4 games.
The DualShock 4 also includes a built-in speaker, meaning that sounds 
from the game can play through the controller instead of your normal 
speakers.

Atop the device is a light bar that can pick up and detect movement, making the controller something like a mixture between a DualShock and
a PlayStation Move. According to Sony, the light bar can display one of
three different LED colors to relay information; for example, if a 
player is low on health and may die in the game, the light bar may relay
this information with the appropriate color. This could be a nice 
replacement to the current method most games use, such as tinting the 
screen red as the player loses health. The light bar will also light up 
corresponding to the player's controller: blue, red, pink and green 
corresponding to player one through four, respectively. Additional 
features the light bar offers include the ability to track players, even
going so far as to reorganize the split screens in a multiplayer game 
when the physical order of the players has changed.