In case you hadn't seen it, Australia tried to ban the use of cash payments for higher value transactions. It didn't end up passing but it is expected to be revived in future.
Silly Australians, you just have to make cash socially unacceptable.
Make cashless attractive for key businesses (rent, utilities, groceries, the popular things), make cards attractive for consumers and soon enough those paying in cash are automatically assumed to be drug dealers or worse.
Then reduce the number of available banknotes, reduce the maximum denomination and implement whatever tracking you want.
Just don't do it too soon like Germany or people will cling on to their cash. Not that it helps them much.
Make cashless attractive for key businesses (rent, utilities, groceries, the popular things), make cards attractive for consumers and soon enough those paying in cash are automatically assumed to be drug dealers or worse.
Then reduce the number of available banknotes, reduce the maximum denomination and implement whatever tracking you want.
Just don't do it too soon like Germany or people will cling on to their cash. Not that it helps them much.