Speaking at an award function organised by the Institute for Development and Research in Banking Technologies, Rajan said the process of setting up an IT subsidiary of RBI is currently underway.
"IT and IT usage has not penetrated into the banks as fully and as properly as we would like. The entire banks are not fully integrated in terms of IT usage such that on a daily basis it can spin out what the details of the loans are, what the performance is. It still takes time to put the stage together," Rajan said.
"There is tremendous amount of information about the customer that is made available through the system ranging from their social media habits and also various kinds of products being used by them. All of this can be use to formulate better in terms of what the customer is likely to use or want and essentially to serve the consumer need," Rajan said.
He said banks which are still using traditional systems and offering traditional products will face huge challenges in future from the modern banks.
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He also hoped that the Supreme Court will take a positive view on the wider usage of Aadhaar card.
"The cost structure in the banking system despite use of all the information technology is still significantly high. Why are they not coming down faster? We should use more and more technology to bring down the cost faster," he said.