Why store your #Bitcoin seed words on a solid metal plate?
1. A solid piece of metal is robust.
2. Multiple small pieces could result in permanent loss of data if separated.
3. Screw-close mechanisms could become permanently sealed shut if galling or cold-welding occurs over time.
Thinking about airport scanners metal is not preferable. Is there a alternative?
Don't know of anything.
Ceramic might give you the heat resistance but is susceptible to physical damage, and you have the difficulty of how to transfer your seed to the ceramic.
I'd always recommend that you never take anything #Bitcoin-related through an airport.
Each metal backup plate is important for preserving a permanent physical record of (half of) your private key. ie. Half of your 24 seed words on one plate, and the other half on another plate, hidden in a different geographical location.
For 24 seed words, this provides 128-bit security for each half.
When traveling anywhere, you could email yourself 12 seed words (with an encrypted email account for belt and braces. eg. Protonmail), then do the same with the other seed words on a completely unrelated device, and unrelated email account.
If anyone views either half of your private key, they can't do anything without the other half.
NB. Splitting 12 seed words in two is a lot less secure (64-bit per half).
Thank you for that. I tried to zap you but couldn't. Really appreciate your best practice guide.
