Plain English
Tangem is a credit-card-shaped hardware wallet from Switzerland, with no buttons, screen, or battery. Communicates via NFC with mobile phones. Each Tangem wallet is a chip embedded in a plastic card; you tap to sign transactions through the Tangem app.
How it actually works
EAL6+ certified secure element. Wallets come in packs of 2 or 3 cards (one is your primary, others are backups). Supports Bitcoin, Ethereum, BNB, Solana, and 6,000+ assets. No seed phrase by default — backup is by cloning to additional cards (though seed phrase can be exported).
What it means for you
Tangem suits users who want the simplest possible cold-storage experience and dislike traditional seed-phrase backup. The trade-off: no screen means you can’t verify destination addresses on the device — you trust the phone. For lower-value cold storage or as a learning device, fine; for size, devices with screens (Ledger, Trezor, Keystone) are safer.
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Educational content only. Not investment, tax, or legal advice.