I don't think so, it's more likely a reference to bank cards, which people now use instead of cash (and operate through encoded account numbers). 

In my view it means that P2P commerce has been eliminated and all transactions are mediated and approved by the 'authorities'.

Probably no reference to crypto codes.  Bitcoin functions more like cash.

Great movie, though.  And strangely predictive.  The script was based on Huxley's 'A Brave New World' is my understanding.