Since the launch of Cities Digest back in January of this year we have written a number of different articles on the use of data by cities, a lot of that has focussed on how cities can use the data that they gather in a smarter way. Today we take a deeper look at open data. So, what is Open Data? Open data is the sharing of data that is generated (in this case by cities) with the general public. The data can then be used by third parties to design new apps and services that t