Money in the Roman Empire.

The current Roman monetary system dates back to the Cavurian reform of thirty years ago. Among the innovations introduced at the time there was the outlawing of all forms of cryptocurrency, a reform on the use of electronic money and especially the change of currency monetization, since in the last century it had degenerated into a mess with as many as 10 different types of different coins with specific uses, and so it was rationalized and simplified by reducing the different denominations to three.

Denominations of money

The most common type of coin is the nummus (pl. nummi). It is the only coin that still has a physical feature, and is available in coins of 1,2 and 5 nummi, as well as in 10, 20 and 30 banknotes. Normally depending on the place 1 or 2 nummi are enough for a cup of coffee, even if prestigious restaurants or tourist traps can make it cost up to 8, while with a dozen you can have a meal in a fast food restaurant.
50 nummi are equivalent to a follis (pl. folles). This coin does not exist physically, but it is still the most used, both to give salaries and to make purchases. Existing only electronically there are no separate denominations, and the coin symbol, a lowercase letter f with two horizontal lines, is often used as a symbol of money in general. An average salary for an unskilled employee or worker is 17 folles.
The third coin is, in many respects, a theoretical currency. In fact, its value is 10000 folles. The solidus (pl. solidus) Is used primarily as an "counting" currency by the state and large corporations for their balance sheets. However, even in this case most people calculate using the folles instead of the solidus, making it in fact very little used, except by automated programs. It has also entered into common use as a synonym for something impossible or otherwise unlikely, for example "it is easier for me having a solidus in my pocket than marry.".

Plastic money

At the same time, the use of electronic money in daily transactions has been strongly regulated, with a nationalization of many aspects considered critical. Each type of credit and debit card is issued by the state, which sells it to the banks and various institutes that manage money, which in turn turn them over to their clients. The cards are extremely similar to those we are used to, even if the technologies used against counterfeiting are much more advanced. A problem that has caused several headaches over the centuries has been the ability to pay throughpapyri by accessing the bank account directly; however despite a continuous update of encryption systems and defensive measures criminals always found new methods to pierce the defenses, pushing the government with the reform of 30 years ago to declare this system definitely illegal, returning in fact back several centuries with physical currency and plastic cards without any wireless technology. This allowed the counterattacks on criminals who, accustomed to increasingly sophisticated technologies, are still struggling to catch up with the current primitive system. This step back, as has been seen by many, has not failed to cause controversy of course, leading to various protests and strikes. However, the situation is now calm, and people have become accustomed to the new rules, albeit with little enthusiasm.