Rumors of a fitness-focused iWatch from Apple(s aapl) have only recently reached a fever pitch, but a patent published by the U.S. Patent and Trademark Office on Tuesday shows the company has been interested in a way to track health and fitness since at least 2007. Spotted by AppleInsider, the patent describes a head-mounted monitoring system that can detect data such as heart rate, perspiration and temperature, and can be controlled via head movements.
In the patent, Apple details ways to incorporate this monitoring system into earbuds, headphones or headsets. Because any of those devices are worn close to your ear, an embedded activity sensor can measure fitness metrics such as heart rate. This data is then synced back to your iOS device via the headphone cord or wirelessly over Bluetooth.
Additional sensors — such as an accelerometer, gyroscope and/or motion sensor — might also be integrated, allowing the headset to recognize movement-based controls. This means you could skip songs or control volume with a simple tilt of your head, though I could also see a feature like that making for a lot of unintended musical choices.
Apple originally filed for the patent back in 2008 (after a provisional application in 2007), but it actually seems more relevant than ever today. The headset it describes reminds me a lot of the heart rate monitoring headphones that LG introduced at CES earlier this year, though it looks as if Apple’s version could detect a lot more than just heart rate.
Considering Apple first filed for the patent over five years ago, this idea likely predated the rumored iWatch and fitness focus for iOS 8. And while Apple’s trademark white earbuds may not be as ubiquitous as they once were, I could see them making a comeback if they could be used to do more than listen to music. I just hope they’ll sound better too.