As you know G20 (or G-20 or Group of Twenty) is an international forum for the governments and central bank governors from 20 major countries as China, Germany, Russia , England, the United States, and the European Union.
This forum aims to discuss policy pertaining to the promotion of international financial stability. This year they will talk about the future and integration of the cryptocurrency in our daily life.
We already know the Russian and Chinese positions regarding the cryptocurrencies, let's see others. FYI the forum will take place in Buenos Aires this March.
My opinion
Nowadays we are stepping forward to a digital area. Checks are already digitals, we don't need to use credit cards anymore, even paper money is needless because you can manage everything with your credit cards. And to cypher the data is a good way to protect us from stealing, hackers.
The only issue is regulation and Bitcoin can't be regulated. I presume all the countries will emit their own currencies and Bitcoin will be our new gold.