The Air Chip is an unseen object. Once obtained, it allows Shadow to perform the Light Speed Dash. It replaced the Air Shoes from Sonic Adventure 2 and Sonic Adventure 2: Battle and is the equivalent to Sonic the Hedgehog's Light Chip in the same game.
In the Shadow Episode, the Air Chip becomes available after clearing White Acropolis and beating the Egg Cerberus, as it is needed to proceed to the next stage, Kingdom Valley. The Air Chip can then be bought at the local shop for 100 Rings.
- Official in-game description.