Research has surmised that any subject holding SCP-067 loses all autonomy of the hand and arm that grasps it. Full sensation is intact, but the arm below the elbow is controlled by unknown forces, theoretically centralized within SCP-067. One effect is that the "controlled" hand will start to use the pen to write a detailed biography of the individual holding the pen. The biography will include such information as the person's name, age, date of birth, criminal record, fears, etc.