UKey Seed Card is a NFC (near field communication) physical card specially designed to assist in the backup and recovery of digital asset mnemonics. This product needs to be used in conjunction with the UKey official App or a hardware wallet that supports this function, and is designed to provide users with a portable, low-exposure risk physical recovery medium.
1. Core positioning and technical features
UKey Seed Card As a purely physical recovery medium, rather than an operational device, it has the following core technical characteristics:
Passive design and underlying communications: Battery-free design, no need to recharge for life. Data reading completely relies on NFC near field communication technology, which does not support and does not have any long-range wireless connection capabilities.
Safe storage mechanism: Only the index, sequence and verification data related to the recovery logic are saved inside the card. Do not directly save the complete mnemonic in clear text form, to minimize the risk of direct leakage after media loss.
Physical isolation of permissions: This card only provides auxiliary functions for data backup and recovery. Absolutely not Initiate any on-chain transaction, also Not participating Any form of digital signature.
Portable physical specifications: Adopting standard bank card size, it is convenient for users to safely put it into wallets, card holders or for physical isolation storage.
2. Working methods and operating logic
UKey Seed Card does not have the ability to run continuously and be online for a long time.
When the card is brought close to an external device that supports the NFC function (such as a smartphone or hardware wallet), the electromagnetic field generated by the external device temporarily powers the card and completes data reading. Once the card leaves the sensing area of the external device, all responses and operations will be stopped immediately. This passive working logic makes it an advanced recovery medium with extremely low exposure.
3. Standard operating specifications: writing and binding
When you need to write backup data to UKey Seed Card, follow these standardized steps:
Launch your UKey App or open the hardware wallet interface that supports the UKey Seed Card function.
Follow the interactive prompts on the system interface to navigate and enter the "Backup", "Write" or "Bind" special process.
Place UKey Seed Card snugly within the device's designated NFC sensing area.
Keep the card position stable and wait for the system to complete identification, data writing and final consistency verification.
4. Standard Operating Practices: Asset Recovery
When you need to recover a digital asset account using UKey Seed Card, please follow these standardized steps:
Launch the UKey app or hardware wallet device that supports the asset recovery process.
In the main interface or system settings, navigate and enter the "Import Wallet" or "Restore Wallet" special process.
Place UKey Seed Card tightly against the device's designated NFC sensing area to transmit recovery data.
Follow the interactive prompts on the system interface to complete subsequent recovery verification operations.
Official usage tips: Since UKey client software and hardware firmware will undergo continuous iterative upgrades, the specific copy names and micro-steps of the actual operation interface may be slightly different from this document. When performing operations, be sure to follow the real-time interactive prompts displayed on the screen of the app or hardware wallet you are currently using.