The PINCODE system was originated by Shriram Bhikaji Velankar in the year 1972. The basic idea behind introducing this system was to simplify the delivery of mail. Earlier, the mails were delivered to incorrect addresses due to the places with similar names. The PINCODE system of India has 9 pin zones out of which one is the functional zone and rest eight are regional zones. This code is of six digits where in the first three digits sort the district. These digits represent the particular region and make it easier to identify the district.

The route of the delivery office is signified by the fourth digit of the pin. This digit is always 0 if the delivery office is located in the core area of the specific district. Moving on to the last two digits, they represent the delivery office. It is true that the PINCODE system is a unique numbering system with every pin having its own importance. When the volume of mails to be delivered a one office is huge then a new office is created with a new pin. This system ensures that a mail is delivered at the right place at the right time.