To draw the right lessons from the largest ever leak of debit and credit card data from several Indian banks that happened last week, the Aadhaar authorities feel it is time to integrate the same with bank account numbers. Ajay Bhushan Pandey, director-general of Unique Identification Authority of India (UIDAI), says the Aadhaar authentication protocol can be overlaid on the card systems. Talking with Business Standard , he said it would mean every time a person swipes her debit card on relatively insecure points such as automated teller machines (ATMs), she will be prompted to provide the Aadhaar number along with her PIN provided by the bank. The two will act as double verification for her. Pandey said he would discuss this option with the finance ministry. The ministry will have to engage in talks with the National Payments Corporation of India and the Reserve Bank of India (RBI), subsequently. Right now, while banks do insist on Aadhaar number for opening of savings accounts,