Table 1.

Examples of recently developed fall detection systems.

	Name	Class	Sensor Type	Location
Research Systems	Lu et al. [10]	vision-based	cameras	indoor
	De Miguel et al. [11]	vision-based	cameras	indoor
	Williams et al. [12]	vision-based	cameras	indoor
	Dotsinsky et al. [13]	vision-based	cameras	indoor
	Kianoush et al. [14]	ambient-based	radio-frequency antennas	indoor
	Ma et al. [15]	ambient-based	UWB	indoor
	Vecchio et al. [16]	ambient-based	UWB	indoor
	Khawaja et al. [17]	ambient-based	UWB	indoor
	Kolakowski et al. [18]	wearable-based	UWB + MEMS	indoor
	Gharghan et al. [19]	wearable-based	accelerometer + Zigbee WSN	indoor
	Fung et al. [20]	wearable-based	GPS + GSM + smartphone	indoor/outdoor
Commercial Systems	TruSense [2]	wearable-based	wearable + motion +contact sensors	indoor/outdoor
	GoLiveClip [3]	wearable-based	wearable sensor + smartphone	indoor/outdoor
	MyNotify [21]	wearable-based	wearable sensor + smartphone/hub	indoor