D'CENT All-in-One Wallet is a card-type cold wallet from D'CENT that stores private keys offline on a bank-grade certified secure chipset. It connects to your smartphone via NFC — simply tap the card to sign transactions without cables, batteries, or Bluetooth pairing.\n\n### Security\n\n- Certified Secure Chipset — The same grade of secure chip used in credit cards, providing hardware-level isolation for private keys.\n- Factory PIN Protection — Each card ships with a factory PIN concealed by ribbon masking, which must be changed to a personal PIN before first use.\n- Offline Key Storage — Private keys never leave the secure chip, keeping them safe from online threats.\n\n### Supported Networks & Assets\n\n- 50+ EVM-Compatible Blockchains including Ethereum, Binance Smart Chain, Polygon, Avalanche, Arbitrum, Optimism, Base, and more.\n- 4,600+ Tokens — Supports ERC20, ERC721 (NFTs), and ERC1155 tokens.\n- Built-in dApp Browser — Connect to DeFi platforms, NFT marketplaces, and Web3 services directly from the D'CENT mobile app.\n\n### How It Works\n\n1. Set Up — Download the D'CENT mobile app (iOS/Android), create a new wallet, and scan your All-in-One Card to pair it via NFC.\n2. Tap to Sign — When sending crypto or interacting with dApps, tap the card to your NFC-enabled phone to authorize the transaction.\n3. Check Address — The wallet address and QR code are printed on the back of the card, allowing quick verification without the app.\n\n### Backup & Recovery\n\nInstead of a traditional seed phrase, the All-in-One Wallet uses a separate Backup Card. Private keys are encrypted and transferred to the Backup Card via NFC, providing a simple recovery method without writing down mnemonic words.\n\n### Key Features\n\n- Credit Card Size — Slim enough to fit in any physical wallet.\n- No Battery Required — Powered entirely by your phone's NFC field.\n- Wallet Address on Card — QR code printed on the back for quick receive transactions.\n- MetaMask QR Integration — Connect to MetaMask via QR-based communication for desktop DeFi access.\n\n### Ideal For\n\nUsers who want an affordable, ultra-portable cold wallet for managing Ethereum and EVM-based assets and NFTs, with the simplicity of tap-to-sign mobile operation.
Pros
- Features a bank-grade EAL5+ certified secure chip for private key storage, providing hardware-level security comparable to financial card standards.
- Includes a dedicated Backup Card that uses encrypted key transfer for recovery, offering a simple alternative to managing a traditional 24-word seed phrase.
- Tap-to-sign via NFC enables fast transaction approvals simply by holding the card against a smartphone, with no cables or Bluetooth pairing required.
- Credit-card-sized form factor fits easily in a physical wallet, making it one of the most portable cold wallet designs available.
- At approximately $38, it is among the most affordable hardware wallets on the market, often costing a fraction of traditional cold wallet alternatives.
Cons
- Uses an EAL5+ secure chip, whereas competing card wallets like Tangem and CoolWallet offer EAL6+ military-grade certified chips.
- Relies entirely on having an NFC-equipped smartphone and the D'CENT mobile app installed; the card cannot function as a standalone device without a phone.
- Lacks a built-in display, so transaction details must be verified on the connected smartphone screen rather than on the device itself.
- Proprietary Backup Card recovery method means you cannot recover funds using a standard BIP39 mnemonic seed phrase if both cards are lost or damaged.
- Supports only Ethereum and EVM-compatible networks (e.g., Polygon, BSC, Arbitrum), so assets on Bitcoin, Solana, XRP, and other non-EVM chains cannot be stored.