4 ms·

Same but with a belt, I don’t wear a belt as a rule. This could easily be a Fitbit type device on wrist.

• sitkack 4y ago
  With the hat or belt, the device is aligned to the body. Wrist mounting would seem to add another degree of freedom. It could work, but the tech would have to be a lot higher.
• jahsome 4y ago
  Why no belts?