Basically what I am looking to do is have the spark core somehow detect that a person is exiting or entering a doorway. In the above video, they do this using the “Touch Board” and a few very simple circuits painted with electronic ink.
I would guess that they are sensing micro-volt currents induced into the painted circuit through the electromagnetic field of a person walking past the circuit.
I have no idea if my assumption is accurate, and even if it is, I have no idea how to implement it with a Spark Core. I would use the “Touch Board” product except that it does not have the WiFi capability of the Spark Core which is paramount to my potential project.
I would greatly appreciate any help anyone can provide me with.