Yes, instructions have been issued by the RBI to pension disbursing banks to allow withdrawal of pension under these conditions.
If a thumb or toe impression of the old/sick pensioner is obtained, it should be identified by two independent witnesses known to the bank, one of whom should be a bank official. However, where the pensioner cannot even put his/her thumb/ toe impression and also would not be able to be physically present in the bank, a mark can be obtained on the cheque/withdrawal form, which should be identified by two independent witnesses, one of whom should be a bank official.
The responsible bank official has to be from the same bank and preferably from the same branch where the pensioner is having his/her pension account.

