FWIW as I commented just earlier if you have to verify without relying on memory nor a public note (e.g. sticker on screen) that others could use to pollute you

FWIW as I commented just earlier if you have to verify without relying on memory nor a public note (e.g. sticker on screen) that others could use to pollute your data then use a biometric mechanism, e.g. YubiKey Bio.