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December 21, 2025➡️Neutral

Syfra: The Ultimate Offline Backup Solution for Crypto Seed Phrases

Syfra offers a secure offline solution for storing crypto wallet seed phrases using encrypted NFC cards and a mobile app.

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What is Syfra?

Syfra is a physical, offline solution designed to securely store cryptocurrency wallet seed phrases. Instead of saving recovery phrases in notes, screenshots, cloud storage, or messengers, users can store them on an encrypted NFC card using the Syfra mobile app.

Why Seed Phrase Security Matters

Seed phrases provide full access to crypto assets. When stored online or in digital form, they can be:

  • Hacked through malware or phishing attacks
  • Leaked from cloud storage breaches
  • Stolen by malicious apps or screen capture software
  • Syfra eliminates these risks by keeping seed phrases completely offline.

    How Syfra Works

    • Encrypted NFC Card: Your seed phrase is stored on a physical card with military-grade encryption
    • Mobile App: Easy-to-use interface for writing and reading your backup
    • Zero Internet: All encryption and decryption happens locally on your device
    • No Accounts: No registration, no servers, no third-party access

    Key Features

    • Works with any BIP-39 compatible wallet
    • Supports 12, 18, and 24-word seed phrases
    • Water and fire resistant card design
    • Compatible with iOS and Android devices

    Frequently Asked Questions

    Does Syfra use cloud storage or internet connection?
    No. Syfra works completely offline. All encryption and decryption processes happen locally on your device. No data is ever sent to external servers.
    Can Syfra team or anyone else access my seed phrase?
    No. Your seed phrase is encrypted with your personal password and stored only on the physical NFC card. The Syfra team has no access to your data.
    What happens if I lose my Syfra card?
    Without your password, the card is useless to anyone who finds it. We recommend keeping a backup card in a separate secure location.

    Data Sources

    Syfra: The Ultimate Offline Backup Solution for Crypto Seed Phrases | Cryptook