It wasn't until my first day on the job that I found out I'd actually be working on Halo, Amazon's fitness tracker that hadn't launched yet. (At the time, Halo was confidential.) In 2018 ...

[txyzinfo] wanted to know what hardware was under the hood, and did an amazing Amazon Halo Teardown. Sometime around the middle of 2020, Amazon jumped on to the health and fitness tracker space ...