Editing Touchscreen (section)

===Hand position, digit used and switching===
Users of handheld and portable touchscreen devices hold them in a variety of ways, and routinely change their method of holding and selection to suit the position and type of input. There are four basic types of handheld interaction:
* Holding at least in part with both hands, tapping with a single thumb
* Holding with two hands and tapping with both thumbs
* Holding with one hand, tapping with the finger (or rarely, thumb) of another hand
* Holding the device in one hand, and tapping with the thumb from that same hand

Use rates vary widely. While two-thumb tapping is encountered rarely (1–3%) for many general interactions, it is used for 41% of typing interaction.<ref>{{cite web|last=Hoober|first=Steven|url=http://uxmatters.com/mt/archives/2014/09/insights-on-switching-centering-and-gestures-for-touchscreens.php|title=Insights on Switching, Centering, and Gestures for Touchscreens|publisher=UXmatters|date=2014-09-02|access-date=2014-08-24|url-status=live|archive-url=https://web.archive.org/web/20140906044746/http://www.uxmatters.com/mt/archives/2014/09/insights-on-switching-centering-and-gestures-for-touchscreens.php|archive-date=2014-09-06}}</ref>

In addition, devices are often placed on surfaces (desks or tables) and tablets especially are used in stands. The user may point, select or gesture in these cases with their finger or thumb, and vary use of these methods.<ref>{{cite web|last=Hoober|first=Steven|url=http://www.uxmatters.com/mt/archives/2013/02/how-do-users-really-hold-mobile-devices.php|title=How Do Users Really Hold Mobile Devices?|publisher=UXmatters|date=2013-02-18|access-date=2014-08-24|url-status=live|archive-url=https://web.archive.org/web/20140826211832/http://www.uxmatters.com/mt/archives/2013/02/how-do-users-really-hold-mobile-devices.php|archive-date=2014-08-26}}</ref>