Hardware Wallets Explained: Do You Need One?
Ledger vs Trezor vs keeping your crypto on an exchange — the honest answer depends on how much you hold and how much risk you're comfortable with. Here's what you actually need to know.
Quick answer: If you hold less than £1,000 in crypto, leaving it on a reputable FCA-registered exchange is probably fine. Above that — especially above £5,000 — a hardware wallet is worth considering. "Not your keys, not your coins."
What is a hardware wallet?
A hardware wallet is a physical device — roughly the size of a USB stick — that stores your cryptocurrency private keys offline. Unlike keeping crypto on an exchange (where the exchange holds your keys), a hardware wallet puts you in direct control of your funds.
The key principle: cryptocurrency isn't actually "stored" anywhere in the traditional sense. What you own is a private key — a string of characters that proves ownership on the blockchain. Whoever holds that key controls the crypto. A hardware wallet keeps that key offline, away from hackers.
Exchange custody vs self-custody
Keeping crypto on an exchange (custodial)
When you buy Bitcoin on Coinbase or Kraken, the exchange holds your private keys on your behalf. This is called custodial storage. It's convenient — you just log in and trade. But it comes with risks:
- If the exchange is hacked, you could lose your funds
- If the exchange goes bust (as FTX did in 2022), withdrawals may be frozen
- If your account is compromised, a hacker can drain it
On the positive side: you don't need to worry about losing a device or forgetting a password. And FCA-registered exchanges in the UK have security measures and some protections in place.
Hardware wallet (self-custody)
With a hardware wallet, you hold your own private keys. Nobody else can access your funds — not the wallet manufacturer, not an exchange, not a hacker. This is called self-custody, or "cold storage."
The trade-off: the responsibility is entirely yours. If you lose the wallet and your recovery phrase, your crypto is gone permanently. There's no customer service to call.
⚠️ Never lose your seed phrase. When you set up a hardware wallet you'll receive a 12 or 24-word recovery phrase. Write it down on paper, store it somewhere safe (not digitally), and never share it with anyone. This phrase is the only way to recover your funds if you lose the device.
Ledger vs Trezor: which should you choose?
The most widely used hardware wallet in the world. Supports 5,500+ cryptocurrencies, has Bluetooth for mobile use, and integrates with the Ledger Live app for easy management.
Best for: Most UK users wanting a balance of security, ease of use, and broad coin support.
Trezor pioneered hardware wallets and has a strong reputation for security and transparency. Fully open source — meaning its code can be independently verified. Touch screen interface.
Best for: Security-conscious users who prioritise transparency and open-source code.
The more affordable Ledger option. Same security chip as the Nano X, without Bluetooth. USB-C connection only. Ideal if you don't need mobile connectivity.
Best for: Budget-conscious buyers who mainly use desktop.
Side-by-side comparison
| Feature | Ledger Nano X | Trezor Model T | Ledger Nano S Plus |
|---|---|---|---|
| Price | ~£129 | ~£179 | ~£79 |
| Supported coins | 5,500+ | 1,800+ | 5,500+ |
| Bluetooth | Yes | No | No |
| Open source | Partial | Fully | Partial |
| Display | Small screen | Touch screen | Small screen |
| Best for | Most users | Security-first | Budget buyers |
Do you actually need one?
Here's an honest framework:
- Under £500 in crypto — a reputable FCA-registered exchange is fine. The cost of a hardware wallet isn't justified.
- £500–£2,000 in crypto — consider a hardware wallet, especially if you're planning to hold long-term. The Nano S Plus at £79 makes sense.
- Over £2,000 in crypto — a hardware wallet is strongly recommended. The cost is negligible compared to what you're protecting.
- Over £10,000 in crypto — self-custody should be considered essential. At this level, exchange risk is meaningful.
Where to buy: Only ever buy a hardware wallet directly from the manufacturer's official website (ledger.com or trezor.io). Never buy second-hand or from Amazon third-party sellers — devices can be tampered with before delivery.
Hardware wallet safety checklist
- Buy direct from the official manufacturer only
- Set up the device yourself — never use a pre-configured device
- Write your seed phrase on paper, store it in a safe place
- Never photograph or digitally store your seed phrase
- Never share your seed phrase with anyone — ever
- Test recovery with a small amount before transferring large funds
- Keep the device's firmware updated
If you're holding meaningful amounts of crypto long-term, a hardware wallet is worth it. Below £1,000 — a good exchange is fine.
The choice between Ledger and Trezor comes down to personal preference. Both are excellent. Ledger has wider coin support and Bluetooth — Trezor is fully open source and has a cleaner security record. Either is a vast improvement over leaving large amounts on an exchange indefinitely.
Affiliate disclosure: ClearYield may earn a commission from hardware wallet purchases via our links, at no extra cost to you. Cryptocurrency carries significant risk — you may lose money.