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Swap Cards

The Tokentagged Swap Card is a physical, card‑sized hardware wallet you can tap, hold, and hand to someone—just like cash. It’s built for everyday use, small values, and real‑world gifting while keeping cryptographic security on a certified secure element.

Shop link: https://tokentagged.com/swapcard

Why it’s different​

  • Permanently transferable: Designed to be passed from person to person, even after repeated use—without breaking security.
  • Physical ownership = access: Whoever holds the card controls the assets stored on it.
  • No app, no setup: Tap with any NFC‑enabled phone (iOS/Android) to open the web interface.
  • Real security: Private keys are generated and stored on the card’s secure element (EAL 6+). The key never leaves the card.
  • Patented handover: The handover security of the Swap Card is patented (patent DE 10 2025 133 131) – see Nonce Control & Handover.

How it works​

Perfect for​

  • Gifting crypto without seed phrases or complex setup
  • Pocket‑sized everyday wallet for small amounts
  • In‑person exchanges of tokens or NFTs
  • Onboarding newcomers who want a simple, physical experience

Supported assets​

  • ETH
  • ERC‑20 tokens
  • ERC‑721 & ERC‑1155 NFTs

Technical specs​

  • Dimensions: 85 × 54 × 1 mm (credit‑card size)
  • Weight: 6 g
  • Material: Robust, water‑ and dust‑resistant plastic
  • Connectivity: NFC (wireless)
  • Compatibility: iOS & Android
  • Security chip: EAL 6+ secure element
  • Operating temperature: −25 °C to +50 °C

Security highlights​

  • Keys never leave the card – all signing happens on the secure element.
  • Designed for repeated transfers – ownership control remains exclusive to the current holder.
  • No seed phrase required for everyday, small‑value use.
  • Emergency access: The Backup App on Arweave verifies the card, shows balances and sends funds even if tokentagged.com is unreachable.
Buying and selling crypto

Buying and selling cryptocurrency directly in the wallet view is coming soon.

Get your Swap Card​

Ready to use it in real life? Visit the official shop: https://tokentagged.com/swapcard