Windows Phone 7 can support multiple methods of input like Touch, On-screen keyboard, Hardware keyboard, Microphone, Phone hardware buttons and Sensors.
Touch input is a core experience of Windows Phone 7 and has inherent differences from traditional keyboard and mouse input systems. Designed for natural and intuitive user interaction, touch input in Windows Phone 7 enables users to interact with application content such as a photo or a web page. Touch input enables simple and consistent user touch gestures that imitate real life behavior, such as panning on a photo to move it.
Single-touch gestures make interaction easier with one hand, but multi-touch gestures are also available to provide more advanced gestures. functionality.
The following single and multi-touch gestures are supported in Windows Phone 7:
- Double Tap
- Touch and Hold
- Pinch and Stretch
Here is a chart sourced from Windows Phone Help, which illustrates the WP7 touch gestures.
If you need more information about Windows Phone UI, do check out the Windows Phone 7 UI Design and Interaction Guide v 2.0.