Originally Posted by grolby

It's a proprietary protocol on the Bluetooth/wifi/ANT+ frequency band, and it has 128-bit encryption. So there is security. As for interference, it could happen, but my ANT+ power data is rock steady even in a peloton of 60 other dudes using ANT+ power meters. Obviously, this is not the exact same thing, and use at a mass production scale is pretty much certain to reveal problems that SRAM's detailed but inevitably limited pre-production testing did not find. But I would not be particularly concerned with interference. We'll see, I guess.