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In India, Postal Index Number is also recognised as a PIN code. It is represented as a six-digit code used by the government postal service, India Post. In 1972, Shriram Bhikaji Velankar, a superintendent in the Union Ministry, innovated this postal address coding scheme. The primary reason for implementing the PIN-code system was to assist postal workers in manually sorting and delivering mail to the correct address. As a result, the public's confusion over equivalent landmarks, invalid addresses, and multiple languages was eliminated. An individual's PIN consists of six digits: the first identifies the zone, the second the sub-zone, and the third, combining the first two, identifies the sorting district. The three digits identify an individual post office within the sorting district at the end of the address. The Indian Postal Service intends to add two more digits to the existing PIN code in the future, understanding that different components or automation technologies could become engaged for a more guaranteed delivery procedure. The government is actively experimenting with using 8-digit PIN numbers in various regions across the country.