
UKey Seed Card is an NFC-enabled seed phrase backup card with a built-in secure chip. When used together with the UKey Wallet App, it encrypts and stores seed phrase information directly on the card’s secure chip, reducing the risks of loss or damage associated with paper backups.
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Minimalist Design


Powered by passive NFC technology. Works without batteries, more reliable for long-term storage.

Simply place the card near the device to read backup info. Simple and intuitive, no complex operations required.

All recovery processes can be completed offline. Avoid the risk of network attacks.

Standard card-sized design, fits easily into your wallet, carrying it without any extra burden.
UKey Seed Card integrates an NFC chip and antenna. When the device is close to the card, the device provides wireless energy for the card and reads the data stored in it. The whole process requires no battery, and the reading speed is fast and stable.



Seed phrase recovery information is stored in encoded form on the card. After the data is read, it must be decoded on the device to avoid directly exposing sensitive information. Even if the card is scanned, the complete seed phrase cannot be obtained directly.









UKey Seed Card is an NFC secure chip mnemonic phrase backup card that encrypts the mnemonic phrase and writes it into the chip to achieve true physical isolation storage.
UKey Seed Card integrates an NFC chip and antenna. When the device is close to the card, the device provides wireless energy for the card and reads the data stored in it. The whole process requires no battery, and the reading speed is fast and stable.
UKey Seed Card is based on the standard mnemonic system. Restored phrases can be used in any compatible wallet. Users always maintain control of their assets.
The answers below describe only the verified purpose, specifications, and functional limits of UKey Seed Card NFC Seed Phrase Backup Card.
UKey Seed Card is an NFC-enabled seed phrase backup card with a built-in secure chip. When used together with the UKey Wallet App, it encrypts and stores seed phrase information directly on the card’s secure chip, reducing the risks of loss or damage associated with paper backups.
Main specifications: Card: Card Dimensions 85.60 x 53.98 mm; Thickness: Thickness 0.76 mm; Communication: NFC; Material: PVC Composite; Security Level: EAL 6+ Certified; Weight: 6.2g
Seed phrase recovery information is stored in encoded form on the card. After the data is read, it must be decoded on the device to avoid directly exposing sensitive information. Even if the card is scanned, the complete seed phrase cannot be obtained directly.
Package contents: UKey Seed Card x2.