[Neidermeyer]

Can someone please tell me how the photo scanning equipment works.. does it work on visible light or some other spectrum?

[nascarnation]

I assume it’s visible light, optical character recognition.
I don’t think the license plates have any RFID in them, but I may be wrong.

Dirt cheap too:
http://www.rakuten.com/prod/lpr-license-plate-recognition-camera-1-3-sony-super-had-ccd-9-22mm-dc/246364507.html?listingId=257779396&scid=pla_google_EvertechUSA&adid=18165&gclid=CNGv3fbTmr4CFeY-MgodGlUAyg