What is a PS4 controller?
The DualShock 4 is the gamepad for the PS4. It is different in several ways from DualShock 3. One new feature is a two-point capacitive touchpad that can be clicked on the front of the controller. The DualShock 4 is the gamepad for the PS4. It is different in several ways from DualShock 3. One new feature is a two-point capacitive touchpad that can be clicked on the front of the controller. This lets the touchpad work like more than one button, as shown in the PS4 version of Elite Dangerous, where each corner of the touchpad can be mapped to a different action that can be clicked on. The controller can tell when something is moving by using a three-axis gyroscope, a three-axis accelerometer, or a vibration. It has a lithium-ion battery with 3.7 V and 1000 mAh that can’t be taken out but can be charged while the system is in rest mode. It is 162 mm 52 mm 98 mm (6.4 in 2.0 in 3.9 in) long and weighs 210 g. (7.4 oz).
On the front of the controller is a light bar with three LEDs that make the light bar glow in different colours when lit all at once. It was made for PlayStation VR and can be used to identify players by matching the colours of the game characters they control or to improve feedback or immersion by changing patterns or colours in response to gameplay. The first time this was shown was in the game Grand Theft Auto V. When the police are looking for the player, the light bar flashes red and blue, just like a police car. With the PlayStation Camera, the light bar is also used to see where and how different players are moving.

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