Part of the point of the paper is to show, yet again, that data that could be considered sufficiently anonymized by stripping IP addresses names etc. is not ano

Part of the point of the paper is to show, yet again, that data that could be considered sufficiently anonymized by stripping IP addresses names etc. is not anonymous enough. Your credit card information identifies you, but you generally don't give your credit card information to any location based service you might want to use. Additionally, there's still this thing called cash, or visiting places that don't require exchanging money. A location profile could expose information like your doctors, what restaurants/bars/clubs you like, where you shop, who your friends are, what political or religious places/events you attend... do I need to go on?