How to Choose a Hardware Wallet, Using Trezor as a Reference Point

Written by Julia Fischer, Digital Finance Writer. Reviewed by Kenji Tanaka, Cryptocurrency Security Engineer. Updated August 26, 2026.

Choosing a hardware wallet is less about picking a brand and more about knowing which features actually protect your funds. This guide walks through what to look for, from open-source firmware to backup standards, so you can judge any device on its merits. Trezor, made by SatoshiLabs and open-source, is used as a reference point rather than as the only option.

What should you look for in a hardware wallet?

You should look for open-source firmware, a sensible security design, support for the coins you actually hold, and a standard recovery backup. Together these decide how trustworthy a wallet is and how well your funds survive a lost or broken device. Everything else, from screen size to extras, is secondary to those fundamentals.

It helps to separate what protects your money from what simply feels nice. A colour screen or a slim body can be pleasant, but they do not decide whether your keys stay safe. The features that matter are the ones that keep keys offline, resist tampering, and let you recover if something goes wrong.

Using Trezor as a reference, the questions worth asking of any device are consistent. Is the code open to inspection, does the design protect the keys and the PIN, are your assets supported, and does the backup follow a standard you can rely on later. The rest of this guide takes each in turn.

Does open-source firmware matter?

Yes, open-source firmware matters, because it lets independent experts inspect exactly how the wallet works instead of trusting a company’s claims. Problems can be found and fixed in the open, which is generally seen as a strength. Trezor devices are open-source, and many buyers treat that transparency as a baseline requirement.

The reasoning is straightforward. Code that anyone can review is code that many people can check for weaknesses, so flaws are less likely to sit hidden for years. Secrecy can hide a good design, but it can also hide a poor one, and you have no way to tell from the outside.

Open-source is not a magic guarantee on its own. It works alongside good hardware design and your own habits, not instead of them. What it buys you is the ability to rely on public scrutiny rather than marketing, which is a reasonable thing to want from a device that guards your money.

Do you need a secure element chip?

A secure element is a chip built to resist physical tampering and to guard secrets, and it raises the bar against attacks that need the device in hand. You do not strictly need one, but many buyers value it. Newer models such as the Trezor Safe line include a secure element, while some earlier models do not.

The benefit is mostly about physical attacks. If someone gains possession of your device, a secure element makes extracting the keys much harder. For a threat model centred on remote attacks, the offline design already does much of the work, so the chip is one factor among several rather than the whole story.

Weigh it against open-source design, since the two are sometimes discussed as a trade-off. The reassuring news is that modern devices increasingly aim to offer both. Decide how much you worry about physical attacks, then treat the secure element as a meaningful plus rather than a strict must-have.

Which coins and tokens should it support?

The wallet should support every coin and token you actually hold or plan to hold, checked specifically rather than assumed. Most modern hardware wallets, Trezor included, support thousands of assets through their companion app, but coverage of smaller or newer tokens can vary, so confirm your own list before deciding.

Start from what you own rather than from a headline number. A device that lists a huge catalogue is only useful if it includes your particular coins, and a shorter list that covers all of yours serves you better. Make a note of the specific assets and check each one.

Consider how you use those assets too. With Trezor, the Suite app lets you send, receive, buy, sell, swap, and track a portfolio, and staking is noted for assets such as Ethereum, Cardano, and Solana. If a particular activity matters to you, confirm it is supported for your coins on the official source.

What backup standard should the wallet use?

The wallet should back up with a standard recovery seed, a list of words commonly of twelve, twenty, or twenty-four, in a widely used format. A standard seed means your wallet can generally be restored on other compatible devices, so you are not locked to one product if it ever disappears.

This is a quiet feature that becomes important on your worst day. If a device breaks or a company folds, a standard seed lets the same words rebuild your wallet elsewhere. A proprietary or unusual backup can leave you dependent on one maker, which is the opposite of what self-custody is meant to give you.

With any wallet, the seed carries the same responsibility. It is created with the device, written offline, and never entered on a website or shared with anyone, since anyone who holds it controls the funds. A standard, portable backup and careful storage together are what make recovery dependable.

How do you compare and choose a hardware wallet?

You compare wallets by listing your coins, checking for open-source firmware, weighing a secure element, confirming a standard backup, and buying new from the official source. The steps below turn those priorities into a simple order of decisions, with Trezor used as the reference example.

Step 1: List the coins you actually hold

Write down the specific coins and tokens you own or plan to own, so you can check that any wallet you consider actually supports all of them. This keeps the decision grounded in your real holdings rather than in a headline catalogue you will never fully use.

Step 2: Check that the firmware is open-source

Prefer a wallet whose firmware is open-source, so that independent experts can inspect how it works rather than asking you to trust a company’s word alone. Trezor devices are open-source, which is why many buyers treat this as a starting requirement.

Step 3: Decide how much you value a secure element

Decide whether you want a dedicated secure element chip, a feature found on newer models such as the Trezor Safe line, weighing it alongside open-source design. How much it matters depends on how concerned you are about physical attacks on the device.

Step 4: Confirm the backup uses a standard seed

Confirm the wallet backs up with a standard recovery seed word list, so your wallet can generally be restored on other compatible devices if needed. This keeps your access tied to the words you keep rather than to one maker.

Step 5: Buy new from the official source

Buy the device new from the official source and set it up yourself, generating your own wallet and recovery seed rather than accepting any that came prepared. A seed supplied in the box is a scam, so a genuine setup always starts fresh.

Hardware wallet selection checklist

The table below turns the discussion into a short checklist you can carry into any comparison. Score each candidate against these points, and let the fundamentals rather than the extras guide the choice.

What to check	Why it matters	Good sign
Open-source firmware	Lets experts inspect the design	Code is public and reviewed
Secure element	Resists physical tampering	Present on newer models such as Trezor Safe
Coin and token support	Covers what you actually hold	Your specific assets are listed
Backup standard	Allows recovery elsewhere	Uses a standard recovery seed
Official purchase	Avoids supply-chain tampering	Bought new from the official source

A candidate that clears every row is a sound choice on the things that count. Where two devices tie, let comfort and price decide, since by then the security fundamentals are already in place.

Frequently asked questions

Is a more expensive hardware wallet always more secure?

No. Price often reflects a screen, materials, or extra features rather than a higher level of security. A modest device with open-source firmware, a sensible design, and a standard backup can protect funds just as well. Match the wallet to your needs and coins rather than assuming that a higher price buys more safety.

Does a secure element make a wallet impossible to hack?

No single feature makes a wallet unhackable. A secure element is a chip designed to resist physical tampering and to guard secrets, which raises the bar against attacks that need the device in hand. It works best alongside open-source firmware, a strong PIN, and careful seed storage, not as a replacement for them.

Can one hardware wallet hold Bitcoin and Ethereum together?

Yes. Most modern hardware wallets, Trezor included, support many coins and tokens at once through their companion app, so Bitcoin and Ethereum can sit under one device. Still check the specific assets you care about before buying, since support for smaller or newer tokens can vary between wallets and models.

Should I choose a wallet based on how many coins it lists?

A long list looks impressive but matters less than whether the wallet covers the specific coins you actually hold. It is better to confirm real support for your assets, plus open-source firmware and a standard backup, than to be swayed by a headline number you will never fully use.