I built a simple EMF sensor yesterday with the Arduino. Mostly because that is what all professional ghost-hunters use, secondly because it was hard to fail with massive readings all over the house :).
However, the most interesting result from the EMF sensor was that lighting a lighter produces an electromagnetic field. I think it is because the small gasexplosion ionise the air for a brief moment?
I’ve been investigating sensor for some time and found some other interesting sensors for example for the iPhone. A quite accurate hear-rate monitor that uses the camera and the light to measure the puls [(free) and a magnetic field meter URL=“https://itunes.apple.com/se/app/emf-meter-free/id323029497?l=en&mt=8”](https://itunes.apple.com/se/app/instant-heart-rate-heart-rate/id409625068?l=en&mt=8). The difference between the Arduino EMF sensor is that it reads fluctuating magnetic fields that produces a current and the iPhone reads static magnetic fields, like the earth magnetic field(for the compass)(I think).
This is all very interesting, but I have a feeling all these sensors everywhere will come together to something in the future?
In what way will we be affected by all these sensors and how will we use it? Will we wear it in our clothes? May I use my camera in the future to take an electromagnetic image? Will any of these sensors have an effect on our decision we make on daily basis? Naturally, the GPS already influences our transport habits, but what else?
