Well sorta. I do not think the circuit board receives anything. It just sends a coded signal to the car. If the car has been taught to accept the fob it will respond. (lock/unlock/panic). It requires a battery.
The RFID chip is different. It must be taught a signal that the SKREEM will accept (programmed). Once this is done then whenever the RFID is strobed by the right power form it will respond with the code. An RFID chip has no intelligence, it just plays back what it has been programmed. It draws power from the field and does not have a battery.

Now once I have a few things (like a key cut) I will try downloading a functional RFID chip and use that to program a new chip then will see if that can create a valet key (85% sure will work).

A separate test will be to build a circuit board system, verify that it is able to transmit, and try to synch.

Once I have all thee elements working, will see if I can use a $7 shell to create a new fob.

Once that is done and I have recorded the waveforms involved then I will look into the SKREEM module itself.