This is a very durable, add-on touchscreen that 'becomes' the mouse, in all applications. Especially great in my Point To Pictures for making 'early' choices, and for all cause/effect software, to introduce them to interacting with pictures. And, of course, any point-and-click type software is instantly accessible simply by touching the thing that would normally require moving, and understanding, a mouse and pointer. Two strong 'hangers' support the Magic Touch's weight while Velcro keeps it affixed to your screen. And it's the only touchscreen available in 17", which I strongly recommend.