Typography

In many parts of the world, cash held in ATMs or in cash-in-transit vehicles is protected by so-called intelligent banknote neutralization technology . When a thief tries to force the ATM open, plastic packs filled with dye explode, spraying both the thief and the banknotes. These notes have now been demarcated as stolen. A shopkeeper may refuse to accept marked notes or may only accept them at a large discount to their face value. At this point, cash has ceased to be fungible. One banknote is not a perfect substitute for another. The dye used in banknote neutralization is often mixed with a taggant , a chemical marker that contains a unique combination of elements chosen from thirty or so rare earth metals. This ensures that a given block of cash is protected by a one-of-its-kind dye pack. So if the authorities apprehend the ink-stained thief with the marked cash, they can actually trace the stuff back to its original owner and return it. This incentivizes any would-be ATM thief to th

The eyes of the world are on one of history's largest cash withdrawals ever. Earlier this week, the Central Bank of Iran ordered its European banker, Hamburg-based Europaeisch-Iranische Handelsbank AG , to process a €300 million cash withdrawal. Germany's central bank, the Bundesbank, is being asked to provide the notes. If the transaction is approved, these euros will be counted up, stacked, and sent via plane back to Iran. German authorities are still reviewing the details of the request. Iran claims that it needs the cash for Iranian citizens who require banknotes while travelling abroad, given their inability to use credit cards, says  Bild . Not surprisingly, U.S. authorities  are dead set against  the €300 million cash transfer and are lobbying German lawmakers to put a stop to it. They claim the funds will be used to fund terrorism. The picture below illustrates $1 billion in U.S. dollars, so you can imagine that €300 million in euro 100 notes would be about a third of t