Product information and compatibility
RFID/NFC blocking card advertised for compatible contactless cards. Check supported cards, frequencies and placement; do not assume every wallet is protected.
The linked ASIN B07BTX247B is a blocking card, not a card reader or a general fraud-prevention system. The seller describes interference with contactless communication. MicroHackers has not measured its blocking performance. Compatibility and protection depend on the cards and arrangement; it does not prevent online payment fraud or account compromise.
