Set of 4 red cards with RFID skimming prevention function. - Color: Red - Function: RFID skimming prevention - Quantity: Set of 4 Thank you for viewing. ≪Details≫ 【Security Measures】 RFID & magnetic skimming prevention card case. Prevents unauthorized reading of card information by skimming. It also prevents interference between cards due to electromagnetic waves and magnetism, preventing damage to magnetic data. 【Convenient to Carry】 Both sides are magnetic-proof, effectively preventing unauthorized reading of card information. The notched design allows you to smoothly take out the cards. It is also ultra-thin, making it easy to carry in your wallet or bag. 【High Quality】 This product uses RFID (Radio Frequency Identification) technology. RFID is widely used in our lives, such as access control for offices and homes, attendance management, and ID card authentication. However, because RFID has the characteristic of "reading information within the range of the receiver without directly viewing the object," criminals such as pickpockets may steal information from credit cards, passports, and ID cards. To protect personal information from these risks, magnetic skimming prevention card cases have been designed. 【Wide Range of Uses】 A card cover that securely protects important card information with its skimming prevention function. It protects cards and electronic money that record personal information, such as My Number cards, credit cards, driver's licenses, transportation IC cards, cash cards, bank cards, medical examination cards, and insurance cards. 【What is Skimming?】 Skimming is the act of stealing data (such as membership numbers and account numbers) recorded on the magnetic tape of other people's credit cards, cash cards, IC passports, etc., using a device called a "skimmer." This can lead to unauthorized use of your credit card or the leakage of personal information without your knowledge.