Not bad at all, especially considering you would only need very coarse grained data, and not even that often. Years ago, McDonalds was handing out pedometers[1

Not bad at all, especially considering you would only need very coarse grained data, and not even that often. Years ago, McDonalds was handing out pedometers[1] which had a year+ battery life along with a display in a package smaller than most key fobs. [1] https://i.imgur.com/hU15Q1u.jpg https://i.imgur.com/hU15Q1u.jpg