Currency *is* disappearing, finally…

Monopoly board game players can now pay for properties with debit
cards. Game makers Parker have phased out the standard multi-coloured
cash in a new version. Players will instead use a Visa mock debit card
to keep track of how much they win or lose. It is inserted into an
electronic machine where the banker taps in cardholders’ earnings and
payments. Parker said replacing of cash with plastic showed the game
was moving with the times.

Here is the link, with echoes of Fischer Black and Neil Wallace.  Here is another account.