And what we did there was actually use a new type of network at the time that had been deployed all across the world -- that's a cellphone network -- and use anonymous and aggregated information from that network, that's collected anyway by the operator, in order to understand how the city works.
Nessa altura, usámos um novo tipo de rede que tinha sido instalada em todo o mundo — uma rede de telemóveis — e usámos a informação anónima e agregada dessa rede, que seria, de qualquer forma, recolhida pela operadora de forma a compreender como funciona a cidade.