https://zwang4.github.io/publication/ubicomp18/
SleepGuard: Capturing Rich Sleep Information using Smartwatch Sensing Data | Zheng (Zane) Wang
sleep information
https://annarbor.craigslist.org/zip/d/ann-arbor-sleepguard-sg/7932517576.html
SleepGuard SG 5 - free stuff - craigslist
Used a couple of times a couple of years ago, like brand new, smoke free, pet free home, cost $600 !!!! Yours free www.mysleepguard.com No time wasters, text...
free stuffsgcraigslist