George MacKerron: 'I can measure how happy you are – and why' - The Guardian

13 Feb 2011

George MacKerron is the inventor of Mappiness, an iPhone app that collates information from thousands of people to find out when, where and why we are at our happiest

For more information visit: http://www.guardian.co.uk/technology/2011/feb/13/bright-idea-mappiness-happiness-app