I am wondering if anybody has ideas for developing an (Arduino?) system that would use RFID to log occurrences when two people are in close proximity to each other (e.g., <= 1 meter). Ideally, I would like to construct something that would operate in a manner very similar to the OpenBeacon system (http://www.openbeacon.org/) -- and, preferably, the events/data would be transmitted via wi-fi in real time.
My ideas are as follows, so any feedback or alternative solutions would be greatly appreciated. (Please keep in mind that I am not an engineer!)
I am thinking of using a wi-fi enable microprocessor (e.g., Arduino Yun) that would serve as the reader or detection system. For beta-testing, this device could be set in an enclosed case and attached to a belt. I presume it would require a fairly robust battery supply. The other person would be wearing an RFID tag that has a range of <= 1 meter and would log the event. Ideally, a reading would take place roughly every 30 seconds, and the captured event would be transmitted over wi-fi.
Here are a few other things to keep in mind:
The people using the hardware should not have to do anything other than simply wear the constructed devices.
The reader itself should be as small as possible.
My ultimate goal is the data logging of the proximal events.
I am certainly open to other technologies, as my ultimate goal is simply the proximity detection with data logging (preferably via wi-fi).
Thanks in advance! Brian