I found some boom barriers,used for gate system, were integrated with UHF reader + access controller and a UHF stickers (attached in car's windshield) for access control using wiegand protocol.
In my review of UHF tags, its memory can be write protected but not read protected because any UHF reader can still read it, right? Therefore it is easy to clone. So how can we make this gate system with passive uhf tag be more secure from someone who wants to trespass?
Or in general, can we make a readable object, from any state, more secure?