The largest lender of the country, State Bank of India is soon going to convert all its debit as well as credit cards to combo cards. These combo cards can then be used for both banking as well as travel cards to be used in Metro rail.

If things materialise as per planning, it will be first implemented in Bangalore. Bangalore Metro Rail Corporation (BMRC) has joined hands with SBI for such cards.

"The exact design, plan and execution of these cards are being finalized with the bank," BMRC officials said.

The cards are most likely to be available to people before the first metro train starts operating in the city in December this year.