Texas-based firm Praetorian wanted to create a searchable database that will be the Shodan search engine for SCADA devices. The researchers located all ZigBee-enabled smart devices and networks and then started expanding their research. During an 18 minute flight, the drone, of which 453 IoT devices are made by Sony and 110 by Philips, located nearly 1,600 Internet-connected devices. Researchers located devices using their custom built connected-device tracking appliance and flew it over Austin, Texas in real time.
Source: https://thehackernews.com/2015/08/hacking-internet-of-things-drone.html