Seeing as they can be cloned/read by those who do not have our best interests at heart, please put your foisted-upon devices in an aluminium-lined pocket/wallet (baking foil will do). Just line the wallet inside the outer pockets, and keep your normal ID in inner pocket! Don't know if there's a marketed alternative, but it surely won't be backed by the PTB!!!
Get the tin foil out - wrap that identifier!!!