iTouch is a concept from Logitech
, designed to annoy you. Roughly, some of the iTouch software will allow you to access the internet through different key combinations.
This means, however, that if you are so unlucky to not plan those combinations carefully, keypresses can go online when not needed. Standard setting will for example send you to a iTouch site when you are working in a web publishing system, thus losing all your work.