Backing up a hardware wallet sounds simple because most devices rely on a recovery phrase, but the backup itself can become the weakest part of the entire security setup.
A hardware wallet may keep private keys isolated from an internet-connected computer, yet if the recovery phrase is photographed, stored in cloud notes or copied into an email, much of that protection disappears. Anyone who obtains the phrase can usually recreate the wallet without needing the original device.
For me, the first rule is keeping the recovery phrase completely offline. Writing it on paper is still common, but paper has obvious weaknesses: fire, water, physical damage and deterioration over time. Metal backup solutions can reduce those risks, especially for long-term storage.
Physical location matters just as much as the material. Keeping the hardware wallet and its recovery phrase together creates a single point of failure. A burglary, fire or other local incident could compromise both at the same time. Separating the device and backup can provide significantly better resilience.
The challenge is avoiding excessive complexity. Splitting a seed phrase into several handwritten fragments may sound safer, but poorly designed backup schemes can make recovery much harder. If one piece is lost or the owner forgets how the system works years later, additional security has actually created additional risk.
Some users consider multiple geographically separated backups. That can protect against physical disasters, but every additional copy also increases the number of places where the recovery phrase could potentially be discovered. There is a real trade-off between redundancy and exposure.
Passphrases can provide another security layer, but they also introduce another secret that must be remembered or backed up correctly. Losing the passphrase while retaining the seed phrase can still make the intended wallet inaccessible.
For larger holdings, multi-signature setups can reduce dependence on a single seed phrase altogether. Instead of one backup granting complete access, several independent keys may be required to move funds. That can improve security, but it also requires much more careful planning and testing.
Whatever method is used, I think recovery should be tested before significant funds are stored. A backup that has never been verified is only an assumption.
How do you back up your hardware wallet?
Do you prefer paper, metal seed storage, geographically separated backups, passphrases or multi-signature custody?
And where do you think the right balance is between having enough redundancy to recover your wallet and creating too many copies of sensitive recovery information?