An NFC chip is the integrated circuit within an NFC tag that makes it perform NFC operations. There are several different NFC chip types available; each with its own features, performance, cost and availability. NFC chips do not work by themselves; they must be be attached to an antenna to form an NFC inlay. The ultimate performance of an NFC chip is determined by the NFC chip, the tuning of the antenna, the product the inlay is in and the device interacting with the NFC tag.