What is thumbing? - Definition from WhatIs.com
Part of the Personal computing glossary:

What is thumbing?

Thumbing is a method of typing on a small keyboard using the thumbs. The method evolved because keyboards on (or sometimes attached to) handheld devices are generally too small for users with full-size hands to type using all the fingers. Thumbing is the typical method used to type messages on a BlackBerry, personal digital assistant (PDA) or a mobile phone.

This was last updated in February 2009
Posted by: Margaret Rouse

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