MIT's Computer Science and Artificial Intelligence (CSAIL) department has created a new system called Chronos. New technology can accurately detect the location of a person or object within a room using only Wi-Fi signals.
The Chronos system works without the help of secondary sensors, using a technology called flight time calculation, which measures the time it takes for the data to travel from the WiFi access point to the user's device.
According to MIT researchers, this new system is 20 times more accurate than current surveillance systems that use WiFi. The researchers report that Chronós had a 94% success rate in detecting a person exactly where they are in a room, and a 97% success rate in whether a store customer was inside or outside. store.
Researchers say that cafes and shops can benefit from a technology like Chrónos, because it will allow them to use WiFi passwords that do not need passwords and will only be addressed to their customers and not to those who roam unnecessarily around space and within the range of Wi-Fi.
Another use of Chronós could be if it was placed on unmanned aerial vehicles (drones) to allow its operators to scan and investigate indoor spaces by discovering faces, from above.
Chronos needs only one access point. Previous WiFi tracking systems required at least four connections, which, in various combinations, performed triangular work to locate a person's room in a room.
Watch the video showing Chronos in action.
You can read the entire research paper, and view the researchers' presentation made at the USENIX Symposium on Networked Systems Design and Implementation (NSDI '16) from the following link (PDF):
http://people.csail.mit.edu/deepak/Slides/NSDI2016_Chronos.pdf
