Radio frequency identification (RFID) skimming is a form of digital theft which enables information from RFID-equipped credit cards to be read and duplicated. It can be used as a form of wireless identity theft or credit card theft.
RFID blocking products block RFID signals using electromagnetic enclosure technology called a Faraday cage. This technology is said to make credit cards electromagnetically opaque by distributing electrostatic charges or radiation around the cage’s exterior, thus protecting its contents from electric charges.