Cold Wallet Hardware Devices

A cold wallet is used to receive, store and send digital assets.

Cold wallet hardware devices are encrypted “self custody” electronic wallets that are not connected to the Internet (and thus safe from hackers) unless the user chooses to connect to the Internet. These devices hold your private keys and are designed to be very difficult to hack. They must be ‘in hand’ for every transaction.

Some cold wallet hardware devices look like a USB flash drive or a microcard, while others have an LED display. When “air-gapped” they provide no Internet cable or wireless connectivity. Many of these devices require a PIN for access and a “seed phrase” to regenerate private keys.

Cold wallet hardware devices may be compatible with other hardware or online wallets. Popular devices support bitcoin, ether and hundreds of other coins and tokens.

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Trezor is the world’s first Bitcoin hardware wallet. It makes the Trezor One and the Trezor Model T cold wallets. Each has an easy-to-use LED interface that’s compatible with Windows, Mac and Linux. Each has security features such as: PIN entry, passphrase entry and device recovery. Each model supports more than 1,000 coins. Trezor products are created by SatoshiLabs, a Czech-Republic-based company.


Ledger Nano X can be optionally and temporarily connected via cable to a Mac or Windows device. Ledger Nano X can be hot-wallet-enabled to buy, sell, exchange, stake, lend and otherwise manage 1500+ tokens. The optional Live Ledger mobile app manages the wallet via Bluetooth; wireless connectivity is otherwise blocked. Started in 2014, the Ledger wallet is a product of the French company named Ledger.

Ngrave Zero

NGRAVE ZERO is 100% air-gapped. The NGRAVE ZERO is non-WiFi/Bluetooth/NFC. Designed to prevent online attacks, it is non-USB with no Internet connectivity. It uses a one-way QR code to relay information. The stainless steel case is fire-resistant. NGRAVE is a Belgian company founded in 2018.


KeepKey is a cold-storage wallet that has no operating system. It provides PIN protection against unauthorized use; additional passphrase protection; customizable transaction speeds and limitless wallet addresses on one device. KeepKey is owned by ShapeShift, a digital assets platform that enables customers to buy, sell, trade, track, send, receive and interact with their digital assets.

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