I think you’re basically right, but the “some sort of matching algorithm” is the problem… I don’t think it’s documented as to what you can do with that data, other than to store it externally and import it into another fingerprint reader so users don’t have to register on each device.
I believe I know who the OEM of this device is, because it pretty much matches up with a PC based device that I bought a couple years ago, and I bought the dev kit for it, and as you imply, there are proprietary DLLs that they provide to do the matching… Nothing that could be conveyed to an embedded situation.
Don’t get me wrong – The device itself is awesome, and if my application would allow me to pre-load all the fingerprints in, it would be perfect. This would be a great device to build a home automation / security system, etc, but for the project I have in mind, this is a perfect round peg for my square hole..