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Continue to ChatFoursquare adds NFC to WP8 app https://www.nfcworld.com/2013/05/09/323950/foursquare-adds-nfc-to-wp8-app/
Foursquare adds NFC to WP8 app https://www.nfcworld.com/2013/05/09/323950/foursquare-adds-nfc-to-wp8-app/