@conference {67,
	title = {Location sharing services as sensors for analyzing airports{\textquoteright} traffic},
	booktitle = {11th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (Mobiquitous 2014)},
	year = {2014},
	month = {12/2014},
	abstract = {Location sharing services can be seen as {\textquotedblleft}social sensors{\textquotedblright} that provide data revealing real world interactions. In this paper, we examine the case of foursquare check-ins at airports and we show that these data can be indicative of the passengers{\textquoteright} traffic, while their number is hundreds of times lower than the number of actual traffic observations.  },
	keywords = {Check-ins, Location sharing services, social networks, Ubiquitous social computing.},
	doi = {10.4108/icst.mobiquitous.2014.257878},
	author = {John Garofalakis and Ioannis Georgoulas and Andreas Komninos and Periklis Ntentopoulos and Athanasios Plessas}
}
