Table 4.

List of equipment used for the experiments.

Equipment	Function	Description	Number
HM-10	Location beacon	Broadcasts a Bluetooth signal every 0.546 s with the Bluetooth module	7
		Low-power operation is enabled with Bluetooth 4.0 technology
Laptop	Localization server	Executes the program written with the Python language	1
		The server updates the indoor map by acquiring the RSSI values from the user application and provides the map to the service client
	Camera-based monitoring client	Executes the client program written with the Java Swing	1
		Connected with webcam, the program provides the indoor surveillance service by acquiring the indoor map form the localization server
Android Smart Phone	User application	Galaxy S6 Edge Smart phone with the OS Android Marshmallow (API level 23) was used for the experiment	1
		User application acquires the RSSI values every 0.546 s by scanning the signals from the location beacons and transmits them to the server
		If not the latest model, it will take much more time to scan the signals
Wireless Router	Private network	Assumes the role of the DHCP (Dynamic Host Configuration Protocol) server. Assigns IPs to the communication devices and perform communications relay between server and client	1