Hi everyone, I am new in the Arduino world, but willing to learn a lot. I am actually working on a project and here is my question: Can the Arduino detect a cell phone? And if yes how, what else do I need to get?
Basically I want to know if it's possible to make the arduino light an Led when a cell phone is in a perimeter of about 5 meters from it. Is it catching the frequency? The electromagnetic field? I would also like that the Arduino make the difference between a cell phone and all other consumer electronics (TV, radio, etc).
Thanks a lot!