Sorry probably mis understood.
My thought was ,If currency is the representation of money, and if money & hence currency goes away, barter is somewhere we will have to head to.
i brought the discussion here because it was off-topic there...
barter system == if you need something and you know someone who can fulfil...
1. you must go to him and haggle over what he wants in return... so, barter is again money system but more intimate, person-to-person... even a city of hundred thousand people will become a chaos in a matter of a few days... so, barter system is impractical.
2. and what if you don't have what he needs... result is quarrel, maybe... at least, more haggling... so, barter system is inefficient.
3. and what if you have what he needs... for example, drumstick vegetable... but what if you don't want to grow drumstick but he supplies something critical which you regularly need but can't produce yourself... so, you must grow drumstick based on his need... so, again inefficient.
already in any socialist society until now, many things come for free... electricity, education, water, housing, justice... a money-less system will make society more efficient and generally crime-free... everything should be available without money... that is the natural state... and barter system is money system, as i have shown above.