In fact, we’ll likely see more trackers come in the form of one of the first wearable technologies: earbuds. Audio companies are starting to embrace the idea of putting accelerometers and heart rate monitors in their earbuds, and ideally it would be a highly practical combo. Most people listen to music while exercising, so a reliable earbud-based monitor could eliminate the need for a music maker and a fitness tracker. We reviewed a bunch of the heart-rate toting earbuds on the market now, and the good news is that some of them are fairly accurate in detecting heart rate. It’s still a hit-or-miss market for now, but 2017 could usher in some even better, second-generation fitness buds that could go toe-to-toe with your favorite wristband.