Hardware crypto wallet Prologic Tangem Wallet Hyperblue — 3 cards (TG-SUMMER3)

Prologic Tangem Wallet Hyperblue — 3 cards (TG-SUMMER3) is a hardware crypto wallet supplied as a set of three contactless smart cards. Each card holds a private key inside a secure element on the card, enabling cold storage and local signing of transactions without exposing keys to connected devices. The solution is designed for long-term protection of digital assets and supports secure, offline key management and contactless transaction authorization via compatible NFC-enabled devices.

Advantages

The set of three Hyperblue smart cards offers physical separation of keys for multi-account or backup strategies while keeping each private key isolated inside a certified secure element. Contactless operation reduces the attack surface by removing the need to connect sensitive devices via cables, and local signing ensures that private keys never leave the card. The compact, card-form factor simplifies secure storage and transport and allows quick use with supported mobile apps and NFC readers.

Suitable for

• Individuals who want cold storage for personal cryptocurrencies and tokens
• Small teams or custodians managing several accounts or needing backup copies
• Users who prefer contactless, offline transaction signing with mobile devices
• Long-term storage of private keys with minimal exposure to online risk

Key specifications

• Form factor: contactless smart card (credit-card size)
• Quantity: set of three independent cards
• Security: secure element on each card stores private keys; local transaction signing
• Connectivity: NFC contactless interface for communication with compatible devices
• Compatibility: works with supported mobile apps and NFC-enabled smartphones or readers
• Use mode: cold storage / offline key management and contactless authorization

How to use

To start, initialise each Hyperblue card using the supported wallet application on an NFC-enabled smartphone or reader. Follow the app workflow to create or import private keys and set up optional PIN protection where available. For transaction signing, present the card to the device when prompted by the wallet app; the card will perform local signing and return the signed transaction to the app without exposing the private key. Store backup cards separately in secure locations to maintain redundancy.

Usage recommendations

Keep cards physically separated from each other and from online devices when not in use. Store at least one backup card in a different secure location. Use PIN protection and the official supported wallet applications for interaction. Verify NFC compatibility with your device before purchase and follow best practices for secure storage to reduce risk of loss or theft.