After years of trying to market exact coordinate check-ins to the public, Facebook and Foursquare are turning their attention to ambient proximity, Techcrunch reports. Facebook launched its “Nearby Friends” feed earlier this month and Foursquare has announced its new app, “Swarm.” Both apps employ ambient proximity, which involves sharing your approximate location with close friends automatically, instead of making the conscious decision to post your arrival at an exact location. Ambient proximity’s appeal is in the fact that users are not required to follow their friends’ every move to know whether or not a spontaneous meeting is possible. Foursquare and Facebook’s ‘Places’ app relied upon check-ins and ambient location sharing that has really never caught on with the public. Despite being the biggest name in the location sharing game, Foursquare only has about 45 million active members, at least as of December 2013.