Near field communication utilizes electromagnetic radio fields while technologies such as Bluetooth and Wi-Fi focus on radio transmissions instead. Near Field Communication is an offshoot of Radio-Frequency Identification (RFID) with the exception that NFC is designed for use by devices within close proximity to each other. When a secure channel is established, the information is encrypted and only an authorized device can decode it. NFC users should ensure that the companies do their business with the use of secure channels.