CHECKIN+ というアプリケーション。このアプリだけでFacebookとforsqareの両方にアクセスすることができる。また、お気に入りの場所の写真を友人と共有したり、友人のいる場所を探す等の沢山の機能を持っている。
(via http://www.joesdaily.com/2011/07/02/checkin-for-iphone/ )Utilizing the augmented reality technology, CheckIn+ overlays current surroundings with places from major geolocation applications and this allows you to see each destination relative to real world as a live video image on your iPhone or iPad 2. Move around and you can see which places are nearby and how far away. Holding the phone vertically transforms map view into the augmented reality perspective.
Other features include:
1. Share photos of your favorite places and leave comments for your friends
2. View Friends activity stream
3. See where are your friends on the map or in augmented reality
4. Search for places nearby
5. Add new places on Foursquare
6.Gather loyalty points and rewards on Foursquare