Wahoo Fitness' BlueSC cycling sensor is well and good for iPhone owners that always have fair weather and friendly roads to ride. For everyone else, there's the company's just-unveiled KICKR Power Trainer, a bike training system that uses a Bluetooth 4.0 link with Apple's device (or an ANT+ bike computer) to come as close as possible to the real thing. The KICKR can change resistance as soon as third-party iOS apps like Kino
