That’s where open data can step in. Open data is information anyone can access, use and share. It should be made available with the technical and legal characteristics necessary for it to be freely used, reused, and redistributed by anyone, anytime, anywhere. Publishing government information in this way has the potential to allow government officials, journalists and citizens to follow financial flows, understand who’s providing government services and to spot suspect behaviour. There is political momentum behind this, and in 2015 the G20 agreed a common approach for how to use open data to combat corruption.