As per railway board letter no.2011/tg-i/20/p/id dated 10.01.2013 attested photocopy of ration card with photograph and nationalized bank passbook with photographs shall also be accepted as a prescribed proof of identity only in case of reserved tickets booked through computerized passenger reservation system (PRS) counters, for undertaking journey in sleeper (SL) and second reserved sitting (2S) classes. the photocopy of the ration card with photograph and nationalized bank passbook with photograph should be attested by gazetted officer or the chief reservation supervisor or station manager/station master.