Arculus Wallet

Arculus is a self-custody crypto wallet built around a physical “Key Card” and a companion mobile app. The product is designed to keep private keys offline on a secure element embedded in a metal card, while allowing users to manage assets and authorize transactions on an NFC-enabled smartphone. Arculus positions the wallet for users who want cold storage protections with a mobile-first experience for assets such as Bitcoin , Ethereum , and other supported networks and tokens.

Arculus uses a card-and-app model rather than a USB-connected hardware device. The Arculus app runs on iOS and Android and is used to view balances, initiate sends and receives, and access features such as swaps and fiat purchases where available. Transaction authorization requires possession of the Arculus Key Card and local device authentication, which is intended to reduce reliance on browser extensions or always-online hot wallets.

Arculus was created by CompoSecure, a company known for manufacturing secure cards used in payments and identity applications. The Arculus wallet adapts that card-based security approach to digital assets by storing cryptographic keys inside a secure chip embedded in a metal card, with a companion application handling the user interface and blockchain interactions.

Arculus emphasizes “true cold storage” by keeping private keys on the card’s secure element rather than on the phone. The wallet uses a three-factor authentication model: something the user has (the Arculus card), something the user knows (a PIN), and something the user is (a biometric check, such as face or fingerprint, depending on the phone). The card is designed to be battery-free and does not use USB or Bluetooth, with NFC used for tap-to-authorize interactions.

From a hardware standpoint, Arculus describes its secure element as CC EAL6+ certified, and it states that private keys never leave the secure chip. The company also states the card can hold multiple accounts for different cryptocurrencies, and it references on-card memory capacity as a factor in how many keys can be stored. On the software side, Arculus promotes broad coverage across coins, tokens, and blockchains, and it highlights custom token support on major EVM networks, including Ethereum , Polygon , and Binance Smart Chain.

Arculus is commonly positioned as an everyday-carry cold storage option for users who want hardware-backed signing without a dedicated USB device. Typical use cases include long-term self-custody of major assets, holding a multi-chain portfolio with a single mobile interface, and interacting with on-chain services through WalletConnect when needed. The card form factor can also appeal to users who prefer a minimalist setup and do not want to manage cables, batteries, or desktop-only software.

For users active on EVM ecosystems, Arculus may be used alongside networks such as Arbitrum , Optimism , and Base , depending on the wallet’s supported blockchains and token coverage at a given time. Arculus also promotes NFT management in-app, which can be relevant for users who hold collectibles on supported networks.