The Delhi State-Level Bankers' Committee (SLBC) suggested measures to prevent rising ATM frauds at a bankers' meet. It suggested a time lag of six to 12 hours between two transactions. Bankers suggested including a one-time password-linked withdrawals to alert account holders in case of an unauthorised withdrawal as well as having a centralised ATM monitoring system.

from Times of India https://timesofindia.indiatimes.com/business/india-business/6-12-hour-gap-between-atm-withdrawals/articleshow/70850574.cms