i can understand the ability to make a brainwallet with electrum and iits remembering the 12 words seed but kinda sucks because words are made by the wallet and your self .
i see a lot of people speaking about brain wallet , basically if i want to make one how i will do that exactly ?? if i have wallets like bitcoin core , multibit etc ... ? pretty sure it's all about remembering the passphrase but those haven't unless you mean the password that helps you to send coins