Would problems that DeepOnion create a bank?

Good as in the previous article https://steemit.com/onion/@lessaul/bank-debit-card-onion or also in https://deeponion.org/community/threads/article-bank-debit-card-onion.34352/ was quite supported, I want to thank you in a great way! Well returning to the subject, the problems that would indicate all this of a card he thought to establish in another article to first make clear the idea of ​​what he wanted to do to be able to continue with the second topic that is technically this; What problems would there be with said card and how to solve them? First of all you have to know that Deep Onion specializes in being an anonymous currency and by making that card that anonymity would be wasted, and that is the first problem I want to address, as I said before that card will have all your cryptocurrencies, in the payment not You will know what type of currency was paid, of course, as there is no increase in the price of cryptocurrencies and it is clear that if we are going to pay, it may be more or less, depending on how the currency gets to be, but in No moment will be known that comes from Deep Onion, the bank could be called such as "DeepBank" or something like that, it's just an idea, but imagine the possibilities that would have all that.
Well having made it clear I will continue with the other issues that need to be discussed and some points of the characteristics that such action would leave

Some countries would prohibit it because they do not want to replace their currency, but this has a clear solution, that they create their own currency and everyone in their bank account will see what kind of coins they have, for example in Argentina they want to make their currency called "Unim", and said card will obviously pay with that kind of currency, but how will it do it if we do not have one? I repeat as before, this bank will have a system that is based on the time of payment to buy the amount of coins required for the purchase selling the ones we already have, and the problem will be solved with countries that prohibit foreign cryptocurrencies because it will not be paid with others, but with theirs. And here we have the case of Venezuela, the president has not said that he has banned them but he locks those who use them with the excuse of "A theft of electricity" or something like that, but having a bank card that buys his "Petro" for purchases in this country, it is totally resolved.

And at the moment there are banks that are already thinking about taking out their own cryptocurrency which would be a great benefit, since our bank would use its currencies and there will be no problems with that country because they want to replace their currency.

"With respect to debit cards, at present there are RF cards, at the moment they are being implemented under the RFID protocol, this technology is similar to the new debit cards that are being implemented in different countries, this card with higher memory could work as a portable wallet, which with the indicated equipment could be canceled anywhere eliminating the centralized banking in the buying and selling process, could even store $ onion bought in a certain way. "Seresjen *

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