Mr President of the French national Commission for UNESCO has granted his patronage for the Franco-Brazilian actions foreseen by the International Experimental Studio for Biodigital city in view of the UIA Congress 2020 (Union International architects); He noted "(…) To master through digital complex approaches, capable of making compatible "important presence of humans on Earth" and "respect of the ecological balances of the planet", look in new technological tools, new ways of To talk, to collaborate, to exchange to look at each other, to understand each other, to live together are objectives that I see in your programme which resonate with those of UNESCO (…)."