Ok, so you say that you are going to use RFID to calculate a player's VPIP (and presumably other in game stats) in a live game. Does everybody at the table get to see these stats, or are you planning to keep this information to yourself? If the latter, this is a scummy, scammy, unethical, and pretty much cheating move. I hate the use of trackers online, but at least everyone at the table has an equal opportunity to use one. Using this info in a home game is pretty low (IMO).
What's next, reviewing the player's hole cards post-game (RFID Cards) to see what they had on a particular bet or fold? Or would you even wait until post-game?