Choose multiple of 5 CUID Magic NFC Cards (Message me for bulk buy discount, orders with quantity over 1) Easily change the UID and card sectors with your Android phone or other device Clone and duplicate MIFARE Classic 1K cards with writable data blocks Compatible with most NFC-enabled Android devices and others etc iPhone Perfect for testing, security research, access control, and DIY projects Cards operate at 13.56MHz frequency (High Frequency) Ready to use—no extra equipment needed Ideal for developers, hobbyists, and security enthusiasts
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