Recently, Google published a research paper that details how the company was able to use any wireless earbuds with ANC (Active Noise Cancellation) to track a user's heart rate.
We expect to see all kinds of new ideas from big tech companies like Google, but this one sounds like it just came out of left field. It shows how diversified Google can be when it's not tracking us across the internet, as well as showcasing the ingenuity of some of the smart folks who work there.
