Touch Gestures have been enabled in the 2014 release of Photoshop CC for Windows 8 systems. Photoshop recognizes its custom gestures on any multi-touch enabled digitizer attached to the system, including direct touch displays and external tablets. Custom Photoshop gestures are not recognized on the touchpad pointing device provided with many laptop systems. You can control Photoshop using devices which support two or more simultaneous touch points.
In Photoshop, two-fingered touch gestures are used to control the location, rotation, and scaling of the image canvas view. Users may alternate between touch view control and other interactions using the mouse or stylus, but touch may not be used simultaneously with other input. Touch control of the view is very convenient when painting on large monitors which are difficult to rotate physically and on tablets to avoid constantly shifting the device.