Where to actually keep a seed phrase

The seed phrase is the whole wallet. Storage has to survive both theft and accident, and those pull in opposite directions.

What not to do

• A photo on your phone. It syncs to a cloud by default.
• A notes app, a password manager, an email draft. All reachable by anyone who gets into that account.
• Typed into any website, ever.

What works

• Paper, in two places. Cheap and effective. One copy at home, one somewhere else trustworthy.
• Metal. Stamped plates survive fire and water. Worth it for meaningful amounts.

The part people skip

Test the backup. Restore the wallet onto a different device from the words alone, before you rely on it. A backup that has never been tested is a guess.

And think about what happens if you are not around. A wallet nobody can reach is indistinguishable from a wallet that never existed.