Daniel Björkegren joined the PSTC and Brown University in 2014. He studies the process of economic development using new sources of data, including records generated by mobile phones. Björkegren's work has shown that patterns in mobile phone usage can be used to identify borrowers who will repay loans, making it possible to create credit scores for millions of households who do not have bank accounts. His current work in Rwanda uses operator records to reveal the network of value generated by mobile phones and to simulate how the market would have evolved under different policies.