what happens in you dont get the RFID injected?

so if you are familiar with the ’666′ barcode then you mmust know about the rfid that you are suppose to inject yourself with.
well what supposly will happen if you dont get it injected?
and one more bonus question **best answer if you answer it and its reasonable**
What about the 666 tattoo? are you suppose to get that too?
im confused…
PLEASE HELP