Heading to NYCC? Use Foursquare? Well, prepare to unlock a badge that'll elevate you to the exalted Green Lantern Corps! Warner Bros. Television Group, DC Entertainment and Foursquare are going green at New York Comic Con, offering fans the chance to unlock an exclusive GREEN LANTERN badge during the three-day show. How does it work? Well, if you're at the con, simply check in to Foursquare and you'll unlock the badge. Head over to the DC Comics booth (#2243) and show your badge and you get an exclusive GREEN LANTERN replica ring. Sounds easy, right?