Cold Storage, Warm UX, Hot Price: Kraster Introduces a Card-sized Hardware Wallet for Secure Crypto Management

Kraster’s team of blockchain engineers, fintech specialists, and cybersecurity experts is currently showcasing the new Kraster Wallet at SiGMA Europe 2025 in Rome (November 3–6). Visitors to the booth can see live demonstrations of the wallet, explore its technical design, and learn how it manages the balance between convenience and self-custody in digital asset management.

We’re proud to showcase Kraster Wallet at SiGMA — the world’s biggest iGaming and tech conference.🙋‍♂️ Visit our booth #6028G, explore the next generation of cold storage, and see how we’re redefining crypto security with elegance and innovation. pic.twitter.com/Kb0whU9jUl

— Kraster Wallet (@walletkraster) November 4, 2025

Unlike traditional USB-style devices, Kraster Wallet is designed in the format of a standard credit card, making it discreet and easy to carry while keeping private keys entirely offline. Each wallet set includes two or three identical cards — if one card is lost, the remaining cards can restore full access to funds. Private keys are stored directly on the card, without reliance on paper seed phrases or external custodians.

The wallet connects to a companion mobile application that enables users to send, receive, exchange, and monitor digital assets across multiple blockchains through an intuitive interface.

Key features:

• Offline key storage: Private keys never leave the card, ensuring full self-custody.
• Multi-device backup: Each card in the set can independently authorize transactions and recover wallet access.
• Multi-chain support: Compatible with more than 100 blockchains through the companion app.
• Transaction insights: Track balances, fees, and activity in real time.
• Durability: The cards are designed for long-term use and come with a 25-year warranty.

Kraster Wallet aims to make secure offline storage more practical for everyday users by combining hardware-level protection with mobile convenience.