For Resident Indians:
This product is available for all Resident Indians and Minors through their guardians.
For Non Resident Indians:
This product is available for all Non- Resident Indians. Deposits from Non-Resident Indians and Persons of Indian Origin residing outside India would be accepted in accordance with the regulations governing the acceptance of deposits from NRIs, for a maximum period of 3 years. Payment of interest and the repayment of deposit shall be made only by credit to NRO account. NRIs can avail benefit of the lower rate of tax under the DTAA by submitting a declaration every year.
See the definition of NRI here.