I am not sure if it means it, but the DL800 decription says:
The "Stylus Included" part may be troubling. Also in the picture they are using one too. It may not be necessary, but some touchscreens don't work without a stylus. Plus it doesn't look like it is in English.
It looks like a passsive touch screen setup...anything object touching it sound activate it. The ones you have to look out for is the stylus that require batteries