The next time you get undressed in the comfort of your own home, start thinking that you’re not necessarily alone. The Massachusetts Institute of Technology (MIT) is working on a new technology that will allow smartphone users to see behind walls. Okay, cell phone users may not be able to see your naked body, but they sure will be able to tell where you are in the room.

I started hearing about this technological breakthrough a few months, ago but now it’s receiving more and more attention because MIT is getting closer to making it a reality.

Their PR machine is going into full swing for MIT professor Dina Katabi and her graduate student Fadel Adib. The two have announced “Wi-Vi,” a technology that uses Wi-Fi to allow a viewer to “see” a person moving behind a wall. “Wi-Vi” stands for “Wi-Fi” and “vision.”

The two educators explain it this way:

Wi-Vi is a new technology that enables seeing through walls using Wi-Fi signals. It allows us to track moving humans through walls and behind closed doors. Wi-Vi relies on capturing the reflections of its own transmitted signals off moving objects behind a wall in order to track them. Wi-Vi’s operation does not require access to any device on the other side of the wall.

The video above shows a demo of how Wi-Vi can track the motion of a person inside a closed room. While no one will confirm, my sources tell me MIT plans to license the technology to first responders and homeland security agencies who need to track the whereabouts of accident victims and terrorists. This should be interesting.