25 June 2012
There are two aspects of Customer Identification. One is establishing identity and the other is establishing present residential address.
For establishing identity, the bank requires any authentic document carrying photo of the customer such as driving licence/ passport/ pan card/ voters' card etc. Though these documents carry the residential address of the customer, it may not be the present address. Therefore, in order to establish the present address of the customer, in addition to passport/ driving licence / voters' card / pan card, the bank may ask for utility bills such as Telephone / Electricity bill etc.
for more inmformation: http://www.rbi.org.in/SCRIPTs/FAQView.aspx?Id=82