DropOS

Specification: 1. CUID card block 0 (UID block) can be modified arbitrarily. 2. Block 0 can be modified directly with an ordinary IC reader/writer. 3. The default password of the card is 12F, FFFFFFFFFFFF. 4. Supports NFC modification of UID on Android phones, but does not support iPhone (but NFC on mobile phones is relatively unstable, we usually recommend using an RFID reader for reading and writing!) 5. Please confirm that your device supports writing to CUID card. 6. Due to different batches, the coils inside the wafer may be slightly different, but it is normal for the functions to be consistent (usually round) Frequency: 13.56 MHz Protocol: ISO14443A Capacity: 1k bytes EEPROM memory Number of rewrites: 100,000 times Modulation method: ASK Manchester encoding Reading distance: 0 ~ 7 cm (depends on the card reader) Material: PVC Size: 25MM round NFC andriod APP(MCT), 300CD,PM5/Pro, iCopy3/5/8, X100，Proxmark 3 support write CUID cards.Confirm your purchase before you write the default machine to support a specific card.