What is Sleev Crypto?
Sleev Crypto is the next evolution in cold storage wallets, replacing cumbersome USB drives and passkeys with an ultra-secure biometric solution. Designed for the Web3 era, it ensures your customers have complete control over their digital assets without the complexity of traditional cold storage methods.
- Cold store crypto on a payment card – no external hardware needed.
- Biometric tap-to-sign for easy, secure transactions – eliminating passkeys and manual entry.
- True self-custody, ensuring only the owner can access and use their crypto.
- Optionally includes contactless payments worldwide, bridging digital assets with real-world spending.

Who is Sleev Crypto for?
Crypto exchanges
Expand your wallet offerings with a cold storage solution based on biometric security. Give customers the flexibility to store, sign, and spend crypto while maintaining complete self-custody.
Web3 fintechs
Elevate digital asset security with a next-gen cold wallet that integrates seamlessly into your ecosystem. Offer customers a secure, biometric-powered way to store, transact, and spend crypto anywhere contactless payments are accepted.
Blockchain wallet providers
Offer a complete wallet solution by complementing your hot wallet with biometric cold storage. Provide customers with added security and flexibility while keeping them engaged within your environment.
Decentralized finance platforms
Offer your customers a cold storage solution that eliminates the headaches of passkeys and USB drives. Users get self-custodial control with biometric authentication for secure, tap-to-sign transactions.
How Sleev Crypto works – From storage to transacting
Sleev Crypto makes it easy for your customers to securely store, manage, and transact with their digital assets. With biometric authentication and cold storage, they get ultimate security without the headaches of traditional hardware wallets.






HOW IT WORKS
Sign up
Your customers create a Sleev Crypto account through your wallet platform.
Receive card
Their biometric-enabled Sleev Crypto card arrives by mail.
Activate
Customers activate their card using NFC through your wallet app.
Enroll biometrics & wallet
Customers register their fingerprint on the card and activate their private key in cold storage.
Transfer crypto
Customers securely transfer digital assets to the Sleev Crypto cold storage wallet.
Tap to sign
To sign transactions, customers simply tap their Sleev Crypto card to their device.
How Sleev Crypto transactions work
Sleev Crypto makes signing blockchain transactions simple and secure. With NFC and biometric authentication, users can approve transactions without exposing private keys or relying on passwords.

Begin Your Web3 Payment Evolution Today
Tell us about your business needs for Sleev, and we’ll reach out to start a conversation.