I know (roll eyes) another SS question! My fingers (especially the index ones) are old, dry and calloused from too many years of use. When I try to operate a PC touch screen or an IPod touch screen with them nothing happens unless I lick them first to add a little moisture. If I use one of my other fingers (less calloused) things work fine. Is this the same technology used by the SS or is it a different principle? I assume the blade would fire once it got in past the calloused part but was just curious if anyone knew if it was the same technology.