Along with the Nationalized bank all the Private sector Banks are also sponsored Indian Prime Minister Schemes.So along with the Nationalized Bank Passbook,Private Sector Bank Passbook also declared as valid one ID.So many rural people are connected to these ( such as TMB,KVB,LVB etc ) Private sector Bank only.Any original passbook loss during travel can be easily retrieved ( such as TMB,KVB,LVB etc ) but very difficult to retrieve the Ration card,Voter id ,driving licence etc