Bip39-Standalone. Techniques for producing powerful and memorable passphrases: Some successful techniques for making powerful and unforgettable passphrases include combining words from various languages, using a mix of seemingly unrelated words, or developing an acronym from a unforgettable phrase. No, there is no specialized limit towards the duration of one's passphrase. https://bookmarkchamp.com/story18857400/bip39-passphrase-https-linktr-ee-bip39-top-guidelines-of-bip39-mnemonic