A nursing home that has tested 150 types of digital care devices installed a sheet-type sensor that measures residents' state of sleep and allows caregivers to check on them remotely. The sensor has led to fewer nighttime visits by caregivers and better sleep in over half of the residents. Another facility uses a sheet-type odor sensor that detects excretions, enabling immediate diaper-changes. Dramatic improvements were seen in the residents' sleep and appetite and caregivers' workload.