When using Treasure Scanner, it will emit a beeping noise that speeds up the closer Classic Sonic gets to an object that is otherwise hidden from sight, such as Item Boxes or Springs. When close enough, it will also automatically cause a black sphere to surround the hidden object, making it easier to uncover it.
To unlock Treasure Scanner, the player must collect all five Red Star Rings from Green Hill Act 1. It will then automatically become available in the player's Skill inventory. It can only be equipped to Classic Sonic and costs 40 Skill Points to be equipped.