There’s LiFi technology, which uses light to transmit data, and then Wi-Peep, a drone that uses WiFi networks to see through walls. This method exploits a security loophole called polite WiFi, which means that even if a network is password protected, smart devices will automatically respond to contact attempts from any device within range.
Wi-Peep works by transmitting several messages to a device as it flies and then measures the response time on each, enabling it to identify the device’s location to within a meter. Using WiFi to see through walls is nothing new, but Wi-Peep allows one to do so using a standard store-bought drone and around $20 worth of hardware that can be purchased from anywhere.
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Using similar technology, one could track the movements of security guards inside a bank by following the location of their phones or smartwatches. Likewise, a thief could identify the location and type of smart devices in a home, including security cameras, laptops, and smart TVs, to find a good candidate for a break-in,” said Dr. Ali Abedi, an adjunct professor of computer science at Waterloo.
