Fig. 3. Home data report over approximately a one-month period. (a) Cover page showing the date the report was generated and the home/subject(s) included in the data report. (b) Plot showing the status of each door contact and PIR motion sensor in a home. HB represents that a " heartbeat " or check-in signal was sent to the hub computer that day from the sensor as a check on its functional status. (c) Data from the electronic pillbox (Medtracker) showing the number of times a compartment was opened and closed each day. (d) Data from the electronic scale showing a participant's weight on days when the scale was used. (e) Data from the watch plotted to show participant step count from each day. (f) Data from the pressure sensitive bedmat showing the duration (hours) for each recorded " sleep. " standards put in place to align the time stamps from the sensor data to that expected by the data collection system. In order to avoid issues with data collected in different time zones, the standard operating procedure for data collected by the CART platform is that time stamps for raw data are always stored in Coordinated Universal Time (UTC). However, a short time after the initial deployment of the platform in different time zones it was found that Withings Activité wearables were all displaying their time according to the time zone of the data storage servers and not the time zone in which the participants lived. This was corrected by adding the ability to designate the time zone for where participants resided using the study software management console used by the CART platform. While the data integrity was never an issue, as it was stored using September 2021 UTC time stamps, the wearables displaying the incorrect time was troublesome for study participants until the issue was resolved. The incorporation of new sensors or technologies into a platform and its deployment in a new location highlight the importance of early review of newly collected data, as novel issues may arise that were not relevant with currently integrated sensor when deployed locally. Variable Sensors for Physical Health and Wellness Domains There are a plethora of sensors available in the commercial and research market to collect information on activity, health, and cognitive outcomes. Each sensor type provides certain advantages, and these must be considered against potential IEEE Instrumentation & Measurement Magazine 73