Table 1.

In-home sensors for residents.

Sensors	Trigger for sensor firing	Place of installation	Sensor data upload	Data type
Passive infrared motion sensors	Motion within 5 m	Wall (near ceiling) in all rooms	Sends ad hoc as status change	Binary
	Current draw of appliances	Wall power outlets	Pushes 1-minute data every 5 minutes	KwH to binary
Circuit meter	Current draw of stove or oven	Switchboard	Pushes 1-minute data every 5 minutes	KwH to binary
Accelerometer	Movement	Under bed	Sends ad hoc as status change	Binary
Reed switches	On breaking of circuit	Exit doors. Kitchen or bedroom doors	Sends ad hoc as status change	Binary
Acoustic sensor	Water flow	Kitchen	Sends ad hoc as status change	Binary
Environmental sensors	Continuous data collection	Kitchen, bathroom, laundry	Pushes 1 reading every minute	Temperature and humidity
Electronic thermometer	Daily recording of temperaturea	Indoor usage	Sends ad hoc after measurement	Temperature
Glucometer of blood	Daily recording of blood pressurea	Indoor usage	Sends ad hoc after measurement	Glucose
Electronic scalesb	Daily recording of weighta	Indoor usage	Sends ad hoc after measurement	Weight
iPad and Web portal	Residents were given an iPad for their personal use and to consult an app on which summary sensor data appeared and diary for health measurements

^aResidents would vary in the regularity and consistency of use of these devices.

^bInformation sent directly to database without the need for user data entry.