I think the writing is on the wall for the rolling out of a digital currency, or a "Fed Coin" in the very near future.
There are obvious implications good and bad that comes with such a highly controllable medium. The good is that it can allow for a more stable economy easily controlled by the fed/gov via expansion/contraction of money supply. Also inherent in a digital coin is the ability to not only track but also specify the use of certain of the coins. For example, coding a certain percentage or targeted coins as to be used only for fuel, travel, mortgage, etc. This can be interpreted as a good or a bad consequence depending upon the viewpoint of the parties involved.
These are possibilities that I am sure everyone anticipating the advent of digital currency have mulled over. I'd like to posit that this medium of exchange may also be used to potentially control the fallout and limit the damage from weather related food shortages. Specifically, those related to the Grand Solar Minimum (GSM) cycle of which we have recently entered into (cycle 2020-2050'ish). The vast cycles of the sun not only spans decades but through multiple generations, and after a warming trend, we have entered a cooling period through a marked decrease in solar activity. This by no means is an extinction level event but simply denotes that certain area of the globe will be a degree or two lower and that the growing season will be shorter. Farmers will have to accommodate this by changing the timing of planting/harvesting, may have to use various weather control techniques including large scale green houses, etc., to circumvent the natural effect of decreased solar activity. With the decrease in crops, meat production will also be scaled back due to the decreased availability of feed for cattles/animals. As an aside, it is interesting to note the increased interest and the amount of money going into companies producing meat substitute made of insects and plants.
https://www.producer.com/2020/05/powerful-investors-get-behind-alternative-meat-sector/
So with the arrival of the Grand Minimum, and the related weather activity and its effects on farming and food production, I wonder if they would be able to designate/code a percentage of coins as only for use for food stuff but place a limit on our digital wallets. Sorta like a forced ration if you will. Of course food inflation will always be a natural preventative for over buying, but we live in a world of equity first now. I see a future where a group of lower wage earners unable to feed their family properly under food inflation/shortages fueling yet another protest. Why wouldn't a government want to preempt such a revolt by placing a forced ration on everyone no matter what socio-economic status they are in.
By the way, for those of you who are not familiar with or who may think the Grand Minimum is the stuff of sci fi, please read the linked 2013 paper presented at the actuary institute summit on the effects of Grand Minimum (GSM) to our lives/businesses. This was presented for actuaries so that they may better help their clients predict and weather the consequent effects of a GSM. I think there's nothing more pragmatic than a viewpoint of an actuary...
https://www.actuaries.asn.au/library/events/sum/2013/sum2013paperbrentwalker.pdf