What is Tool ID?
Tool ID is an intelligent system that allows additional Intuos and Cintiq input devices to be personalized to the software of your choice. Every input device has a unique electronic identification so even multiple users can each have their own tools personalized to work the way they prefer on a shared system. If you are working with two identical pens, the tablet will recognize each one as a separate tool. This is particularly useful if you have customized each pen differently. In applications, which support the Tool ID, the brush or pen will change automatically just by changing the input device.