Sonicam

The Sonicam is a camera that allows the Knothole Freedom Fighters–Sally Acorn, Rotor Walrus, and Antoine–to monitor Sonic the Hedgehog in the Sonic the Hedgehog comic series. It was inserted on Sonic's shoe strap in order for the Freedom Fighters to watch Sonic's movement. Unfortunately, due to Sonic's rate of speed, he is too fast for the monitor the Blue Blur.

History
It was only used once; when Dr. Robotnik had captured Amy Rose and, eventually, Miles "Tails" Prower, Sonic went to Robotnik's newly created zone, the Collision Chaos Zone, and raced Metal Sonic in the Stardust Speedway Zone. However, Sonic used the Super Peel Out to beat Metal Sonic, which the robotic doppelganger melted trying to keep up with Sonic. It is unknwon what happened to the Sonicam, as it could have been taken off by Sonic and to be never used again. (StH #25)