Techno-blade
From Jenny Everywhere Wiki
Techno-blades were devices used by Data Pirates such as Lol. They could somehow be used to force data or responses from a computer (or other digital device) by physically damaging them: Lol's techno-blades could extract information when used to slice, and allow her to briefly take control of a device by stabbing it with the blade. (GAME: The Jenny Everywhere Roleplaying Game)