Festival shows the promises and perils of open data Governments and big businesses want information to be free, but how will it work? A Berlin festival last week cast a friendly but critical eye over the idea CultureLab
TechnologyRevealing all: A history of secret writing A history of secret messages that runs from lemon juice to codes in digital photos, Prisoners, Lovers, and Spies doesn't quite live up to its glamorous title CultureLab