Question 1

How do hardware wallets differ on security?

Accepted Answer

They differ in three main ways: how they connect (USB, Bluetooth, NFC, or QR codes and microSD), whether the code is open source, and whether the secure element has a stated certification such as EAL5+ or EAL6+. No device removes every risk. For example, Coinkite's July 30, 2026 advisory found weak seed generation in older COLDCARD firmware, and Ledger's 2020 customer-data breach exposed contact details. The table lists each factor so you can match a device to the risks you care about.

Question 2

Is Ledger safe after the data breach?

Accepted Answer

Your crypto private keys were never at risk — Ledger's hardware security chip protects those regardless of the 2020 breach. What was leaked was customer PII (names, emails, shipping addresses), which can lead to phishing attacks. If you own a Ledger, be especially skeptical of any unsolicited communication claiming to be from Ledger. Separately, Ledger Recover is an optional, opt-in paid subscription, run with Coincover, for backing up your seed phrase; it requires identity verification, and Ledger devices work without it. Ledger's Recover page is linked under the comparison table.

Question 3

What does 'air-gapped' mean for a hardware wallet?

Accepted Answer

An air-gapped wallet signs transactions without a USB data, Bluetooth or Wi-Fi link, passing them by QR code or microSD instead. This removes USB and wireless attack paths. On this page, the ELLIPAL Titan 2.0 has no USB data, Bluetooth or Wi-Fi. The Keystone 3 Pro has an air-gapped mode, and the COLDCARD Q lets you permanently disable USB and NFC. Foundation's Passport Prime uses Bluetooth, NFC, USB-C and QR, so it is not air-gapped by default.

Question 4

What is the difference between Trezor Safe 3 and Ledger Nano X?

Accepted Answer

The Trezor Safe 3 ($59) is open source, has an EAL6+ secure element, and connects by USB-C only. The Ledger Nano X ($99) has an EAL5+ secure element, adds Bluetooth for phone use, and supports 500+ coins in Ledger Wallet; thousands via third-party wallets. Its firmware is not open source. The Safe 3 fits people who want verifiable code; the Nano X fits people who want Bluetooth and broad coin coverage in one app.

Question 5

Do I need a hardware wallet if I use a reputable exchange?

Accepted Answer

Not necessarily. Coins held on an exchange depend on that exchange staying solvent and secure: when FTX failed, customers lost access to their funds. A hardware wallet gives you self-custody, meaning you hold the private keys instead of the exchange, and you take on responsibility for the device and its backup. Many people keep long-term holdings in cold storage and smaller trading balances on an exchange.

Question 6

Which hardware wallet supports the most coins?

Accepted Answer

Makers count coverage differently, so the figures aren't directly comparable. Tangem lists 14,100+ assets across 90+ networks. ELLIPAL lists 10,000+ tokens on 45+ blockchains for the Titan 2.0. Ledger states 500+ coins in Ledger Wallet; thousands via third-party wallets. Trezor says its devices support thousands of coins and tokens without giving an exact count. COLDCARD devices are Bitcoin only.

Question 7

Is open-source firmware actually important for hardware wallets?

Accepted Answer

It matters if you want independent verification. When the code is published (Trezor, Foundation Passport Prime, Keystone, BitBox and Tangem describe their wallets as open source), outside researchers can review it instead of relying on the maker's word. Ledger's device firmware is not open source, so using it requires more trust in the company. Open source is one factor alongside the secure element, connectivity and how you store your backup.

Question 8

What hardware wallet fits a beginner?

Accepted Answer

Lower-priced, simpler devices tend to fit first-time users. The Trezor Safe 3 ($59) is open source with an EAL6+ secure element. The Ledger Nano S Plus ($69) has an EAL6+ secure element and uses the Ledger Wallet app, but connects by USB only and doesn't work with iPhone. Tangem (from $54.90 (2-card set)) is an NFC card that works with a phone and has no seed phrase by default. If you want Bluetooth and a phone-first setup, the Ledger Nano X ($99) works with the Ledger Wallet app.

Question 9

What was the July 2026 COLDCARD security advisory?

Accepted Answer

On July 30, 2026, Coinkite published an advisory about weak seed generation in older COLDCARD firmware. Seeds generated on Mk4 or Mk5 firmware before 5.6.0, or on Q firmware before 1.5.0Q, are affected. Coinkite says updating the firmware fixes future seed generation but does not repair an existing affected seed, and it recommends moving funds to a new seed unless at least 50 private dice rolls were added. New units ship with corrected firmware. Details: https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/

Price	Air-GappedSigns transactions without a USB data, Bluetooth or Wi-Fi link, moving them by QR code or microSD instead. This greatly reduces the remote attack surface. "Optional" means the wired or wireless links can be turned off.	Open SourceWhether the maker publishes the wallet's code so independent researchers can review it.	Supported CoinsCoverage as the maker states it. Makers count coins differently, and Bitcoin-only wallets limit support on purpose.	Security CertCommon Criteria EAL (Evaluation Assurance Level) of the secure element, as the maker states it. Higher numbers mean more rigorous evaluation. A dash means no level is stated.	Fits	Website
$59Source	No	Yes	Thousands (Trezor gives no exact count)	EAL6+	Fits people who want an open-source wallet with a certified secure element at a lower price.	Visit Trezor
$129Source	No	Yes	Thousands (Trezor gives no exact count)	EAL6+	Fits people who want an open-source wallet with a color touchscreen.	Visit Trezor
$249Source	No	Yes	Thousands (Trezor gives no exact count)	EAL6+	Fits people who want an open-source wallet that can pair with a phone over Bluetooth.	Visit Trezor
$69Source	No	No	500+ coins in Ledger Wallet; thousands via third-party wallets	EAL6+	Fits people who want a Ledger device at a lower price and use a computer or Android phone.	Visit Ledger
$99Source	No	No	500+ coins in Ledger Wallet; thousands via third-party wallets	EAL5+	Fits people who want to sign from a phone over Bluetooth and hold many different coins.	Visit Ledger
$179Source	No	No	500+ coins in Ledger Wallet; thousands via third-party wallets	EAL6+	Fits people who want a Ledger with Bluetooth and NFC at a mid-range price.	Visit Ledger
$249Source	No	No	500+ coins in Ledger Wallet; thousands via third-party wallets	EAL6+	Fits people who want a larger touchscreen Ledger without paying for the Stax.	Visit Ledger
$399Source	No	No	500+ coins in Ledger Wallet; thousands via third-party wallets	EAL6+	Fits people who want a large E Ink touchscreen and wireless charging.	Visit Ledger
$219 (sale; regular $269)Source	Check site	Check site	Bitcoin only	—	Fits Bitcoin-only holders who are comfortable with a detailed, technical setup.	Visit Coinkite
$319 (sale; regular $369)Source	Optional	Check site	Bitcoin only	—	Fits Bitcoin-only holders who want QR signing and the option to disable USB and NFC.	Visit Coinkite
$349Source	No	Yes	Bitcoin-focused	—	Fits Bitcoin holders who want open-source hardware and a phone-friendly setup.	Visit Foundation
From $149 (regular $183.90)Source	Optional	Yes	Multi-coin	—	Fits multi-coin holders who want QR signing with software wallets they already use.	Visit Keystone
$167Source	No	Yes	Multi-coin or Bitcoin-only edition	—	Fits people who want a simple open-source wallet, including a Bitcoin-only edition.	Visit BitBox
$196Source	No	Yes	Multi-coin or Bitcoin-only edition	—	Fits people who want an open-source wallet that also pairs with a phone.	Visit BitBox
$169Source	Yes	Not stated	10,000+ tokens, 45+ blockchains	EAL5+	Fits multi-coin holders who want QR-only signing and broad token support.	Visit ELLIPAL
From $54.90 (2-card set)Source	No	Yes	14,100+ assets, 90+ networks	EAL6+	Fits people who want a card-sized wallet that works with a phone and no seed phrase by default.	Visit Tangem

Cold Storage Wallets Compared

Quick Comparison

Our Take

COLDCARD Q or COLDCARD Mk5

Keystone 3 Pro or ELLIPAL Titan 2.0

Trezor Safe 3, Ledger Nano S Plus or Tangem

Frequently Asked Questions