How India's PIN Code System Began
Before computers touched a single envelope, one man's numbering scheme had to make manual sorting work at national scale. Here's the story of 1972.
Read the post →Short, well-researched reads on the history and mechanics behind the six digits — for anyone who's ever wondered why a PIN looks the way it does.
Before computers touched a single envelope, one man's numbering scheme had to make manual sorting work at national scale. Here's the story of 1972.
Read the post →Every post office in the register carries a type stamp. Here's the hierarchy behind those four letters, and why it matters on a form.
Read the post →A 900000-series PIN doesn't map to any place on a map. Here's why, and how mail actually reaches soldiers serving anywhere in the world.
Read the post →Delhi packs nearly a hundred distinct PINs into one metro area. The reason has more to do with administration than geography.
Read the post →That instant "delivery in 2 days" estimate at checkout starts with your PIN. Here's everything it's quietly checking before you notice.
Read the post →At 14,567 feet in Himachal Pradesh, mail still arrives — carried on foot, sorted under PIN 172114 like anywhere else.
Read the post →Moored on Srinagar's Dal Lake since 2011 — a working post office you reach by shikara, not by street.
Read the post →Infosys's Mysore campus shares its PIN with no neighbour at all. Here's why India Post does this.
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