Overview
Tangem is a smartcard-shaped hardware wallet that secures Cardano and thousands of other crypto assets on a certified chip embedded inside a credit-card-sized device1. Users tap the card to a phone over NFC to sign transactions, with no batteries, cables, or USB ports involved. It targets self-custody users who want cold storage without the complexity of traditional hardware wallets.
The wallet ships as a set of two or three linked cards. Each card holds the same keys, so a lost card can be recovered through its siblings rather than a written seed phrase1. Tangem supports ADA natively alongside more than 16,000 tokens across 90 blockchain networks, making it one of the broader multichain options in the cold storage space.
Key Features
- Smartcard form factor. A credit-card-sized NFC device replaces the USB hardware wallet, eliminating cables, batteries, and charging entirely1.
- Seedless backup model. Multiple linked cards act as physical backups instead of a twelve-word recovery phrase, with seed phrase generation kept as an optional path1.
- EAL6+ certified secure element. The chip is developed with Samsung Semiconductors and certified to the same security level used in biometric passports1.
- Native Cardano staking. ADA holders delegate to stake pools directly from the Tangem app, signing delegation transactions with a tap2.
- dApp connectivity. WalletConnect integration lets users sign smart contract interactions from compatible Cardano DApps without exposing keys3.
What to Expect
Setup takes about two minutes. A user activates the card, links the backups, and the secure element generates a private key from on-chip entropy1. From there, sending ADA, receiving tokens, or delegating to a stake pool happens inside the Tangem mobile app, with each action confirmed by tapping the card to the phone.
For Cardano holders, the experience covers the core operations: native ADA send and receive, delegation to stake pools through the integrated staking flow2, and dApp signing via WalletConnect3. The Cardano page on Tangem documents ADA as a natively supported asset alongside the rest of the Tangem catalog4. Firmware has been independently audited by Kudelski Security and Riscure, and the mobile app source is published on GitHub for community verification1.
The tradeoff is form factor preference. Users comfortable with USB hardware wallets like Ledger may find the lack of a built-in screen a downside, since transaction details are reviewed on the phone rather than the device itself. For users prioritizing portability, durability, and a low-friction onboarding, the card model removes most of the friction associated with cold storage.
