Sozial


How to map wealth in Africa using nothing but mobile-phone minutes

A group of Belgian researchers has come up with a novel way of mapping the distribution of wealth in Côte d’Ivoire—by looking at purchases of mobile airtime minutes. After combing reams of data on individual purchases from a national mobile operator (unnamed in their report), they discovered that, in a country where prepaid phones dominate, there are basically two kinds of airtime buyers: those who make big infrequent purchases, filling up on minutes, and those who buy fewer minutes more regularly.>>   weiterlesen