Originally Posted by geekmaster
For the PW, you would need a conductive stylus, such as for an ipad or android device.
It may be not quite true. Certain types of Cypress TrueTouch capacitive touchscreen (used in PW) can handle thin passive stylus.
I've found mentioning of stylus support
in PW kernel code (look into last spoiler), however, I haven't a PW to test it. It should select finger/stylus/finger+stylus support basing on content of some file in /sys