Kamino Saberdart

Zam Wesell died almost instantly from a toxic Mk I saberdart to the throat, fired by a mysterious bounty hunter. It took Obi-Wan Kenobi a few tries to identify its origin.

Jedi Testing Screen

The Jedi Council had many tools to identify and quantify Force users. One, a testing screen, displayed an item that the subject had to guess identify with the Force, of course.