What is this?

Where's Rupee? tracks Indian currency notes as they move through the country. It's the same game Where's George? has played with US dollar bills since 1998. Every note carries a unique serial number, which makes cash the only mass-produced object in India you can follow from hand to hand across the country. It's a field experiment in how cash moves through India, and it isn't affiliated with the RBI.

Is it still running?

Yes. Where's Rupee? is live. It launched in July 2026. Before that this domain belonged to someone else, and whatever they ran here has nothing to do with this site. As of 30 October 2026, 61 notes have been entered with 61 sightings across 16 of 36 states and union territories, the latest that same day. Those numbers are live, not typed in.

How to play

1. Got a note? Pick its value and type its serial on the front page. You'll see if anyone has entered it before. Then add your PIN code to put it on the map.
2. Leave your email (optional). It's the only way to hear back when the note turns up somewhere else.
3. Spend it. Back into circulation it goes. Every time someone else enters it, the trail grows, and if you left an email, you hear where.

That's the whole game. No account needed, nothing to buy, no note ever has to be touched.

Do I have to write on the note?

No, and we don't ask you to. A note tracks by its serial number whether or not it's marked. That said, the way this game spreads is that the next person somehow learns the note is being tracked, and in other countries players have done that for 25+ years by writing the site's name small in the margin. If you're tempted: know that the RBI discourages writing on notes, and a marked note that later gets damaged could have a refund claim refused. It won't stop being money, but it's a real trade-off. Your note, your call. We'll track the serial either way.

What do you store?

The note's denomination and serial, the PIN code you enter, and whatever you type in the story field. No account needed, no phone number, no precise location: a PIN code covers whole neighbourhoods, and that's the point. If you want a page of everything you've reported, sign in with just your email. It's a mailed link, no password, entirely optional. Each sighting also keeps a scrambled code made from your internet connection, so we can tell different people apart. It can't be turned back into your IP address or your location. If you leave an email, it's used for exactly one thing: telling you when your note turns up again. It never appears on the site, and every mail carries an unsubscribe link.

A note's shareable trail page shows only the start and end of its serial, like 5ML •••553, so the link is safe to post anywhere. The full number is how a holder proves the note is in their hand, so only someone holding it can add a stop.

Flagged hops

Notes travel in pockets and cash drawers, not on hypersonic jets. If a note "appears" 800 km away an hour after its last sighting, we record it but leave it out of the distance totals.

Can I report the same note twice?

Once per stop. A note counts again when it has actually moved. There's a two-hour minimum between sightings of the same note, and re-entering it from the same connection within a few hours is ignored. Refreshing doesn't make a trail; spending does.

Why was my sighting rejected?

Usually one of three things: the serial doesn't match a real number panel (a prefix like 3AB or 00A, then six digits; see how to read the serial), the PIN code isn't in India Post's directory, or the note was reported somewhere else minutes ago. Entries copied from photos or online listings get removed when we spot them. Only a note in your hand counts.

What are the tags on some notes?

Collectors call some serials "fancy": all one digit, ladders like 123456, palindromes, serials carrying 786, the millionth note of a print run. We tag them because finding one in your change is a small event. The fancy serials guide lists every pattern and how rare it is. Ignore anyone claiming they're "worth lakhs"; the RBI warns those offers are scams.

Something else?

Found a bug, spotted abuse, or want to tell us where a note turned up? Write to [email protected].