ANT is a digital radio system for small personal area networking, similar in some respects to Bluetooth. It is similar in that it uses digital radio on the 2.4 Ghz radio frequency and has approximately the same range (depending on what kind of Bluetooth device you’re comparing it to). It is different in that it uses its own “language” (protocol). It is gaining popularity in the Sports and Fitness markets. You may refer to www.thisisant.com.