Tim Sears has released an update to Future Checkin, an app which uses iOS 4 background location services to automatically check-in users to nearby Foursquare venues. Future Checkin allows users to specify locations on Foursquare that they wish to check into automatically and the app continues running in the background to monitor the user’s location and check them in when they are near any of their chosen locations for more than three minutes. Users can also configure the app to auto-checkin to any places that they have checked into in the past, customize settings to control GPS accuracy in exchange for battery life and choose to receive notifications to confirm auto-checkins when they occur. Version 1.1 adds the ability for users to adjust the proximity to a location before they will be checked in and allows users to share automatic checkins using their Foursquare-linked Twitter and Facebook accounts. This latest update also improves battery life and contains several UI improvements and bug fixes. Future Checkin requires an iPhone 4 or iPhone 3GS running iOS 4.0 or later and is available from the App Store for $2.