"DEAF accounts" refer to funds in bank accounts that have been inactive for 10 years or more, which are then transferred by banks to the Depositor Education and Awareness Fund (DEAF) maintained by the Reserve Bank of India (RBI). It's a depositor-friendly initiative to protect unclaimed money, not a new type of account, and depositors retain the right to claim their funds, plus interest, at any time by contacting their Bank.
In essence, DEAF is a system to manage and secure money that has been forgotten, ensuring it's protected and can be recovered.