which links all the atm's in india
National Financial Switch National Financial Switch (NFS) is the largest network of shared automated teller machines (ATMs) in India.[1] It was designed, developed and deployed by the Institute for Development and Research in Banking Technology (IDRBT) in 2004, with the goal of inter-connecting the ATMs in the country and facilitating convenience banking. It is run by the National Payments Corporation of India (NPCI).