Banknote tracking In most jurisdictions, banknotes are not routinely tracked by serial number. There are the following exceptions in cash applications: Registration of ransom money for blackmail (e.g. for the Oetker kidnapping) Macroeconomic studies of cash flows through the central bank Statistical recording of the lifespan of banknotes by the central bank Tracking the (location-based) migration of individual banknotes using EuroBillTracker for euro banknotes, Where's George? for US dollars and Where's Willy? for Canadian dollars as a hobby Use of individual banknotes for sharing messages with recipients using the mobile app smill.
banknote tracking in most jurisdictions banknotes are not routinely tracked by serial number there are the following exceptions in cash applications registration of ransom money for blackmail (eg for the oetker kidnapping) macroeconomic studies of cash flows through the central bank statistical recording of the lifespan of banknotes by the central bank tracking the (location-based) migration of individual banknotes using eurobilltracker for euro banknotes where's george for us dollars and where's willy for canadian dollars as a hobby use of individual banknotes for sharing messages with recipients using the mobile app smill