Foursquare launched in 2009 and reached 10 million users in September 2011. It allows users to "check in" at venues using their smartphones. In October 2011, Foursquare introduced Radar, which allows users to see friends' locations in real time. The service gamifies location check-ins by awarding badges and mayorships to users. It also provides tips, lists and special offers to users based on their location.

1. 2012.1.23
By @sakebook
http://sakebook.blogspot.com

2. about

4. 5

5. (2009.3)

6. (2010.10)

7. 4/16(foursquare day)
(2011.4)

8. 10 (2011.9)
https://ja.foursquare.com/infographics/10million

9. 1500 (2011.12)

12. 4

13. SNS (Guide)
Game Lifelog

14. SNS (Guide)
Game Lifelog

15. Encounter
1 1
200

16. Shout

17. Radar( )
To-Do list Venue
3
Venue
iPhone
(iPhone 4S )
4sqWalker http://4sqwalker.com
The real world, now in real-time! Say hi to foursquare Radar!
http://blog.foursquare.com/2011/10/12/the-real-world-now-in-real-time-say-hi-to-foursquare-radar/

18. SNS (Guide)
Game Lifelog

19. Serendipity

20. Tips

21. Lists

22. List

24. Special Offer

25. Explore

26. SNS (Guide)
Game Lifelog

27. Gamification
―Gabe Zichermann ! Gamification
http://techwave.jp/archives/51716146.html

28. Badge( )
CI
(unlock)
foursquare,expertise,partner 3
250 ( )

29. Halloween 2010
“Halloween“ Shout
CI (RETIERD)
Barista
StarBucks
5 StarBucks CI
(RETIRED)
Swarm
50 2
CI

30. Partner
foursquare
Special Offer

31. SNS (Guide)
Game Lifelog

32. Reflection

33. Shout

34. https://foursquare.com/ /stats

35. KML, ICS
https://foursquare.com/feeds/
1

36. Google
https://feeds.foursquare.com/history/xxxxx.ics
1

37. Google Map
https://feeds.foursquare.com/history/xxxxx.kml
1
http://www.youtube.com/disco

41. Foursquare Global Hackathon
2011.9.17-18
New York, San Francisco, Tokyo, Paris, Denver
And Everywhere…
500
90

42. TITLE BELT
Plan Your Next Trip http://www.my-next-trip.com/
Other hacks http://fshackathon.appspot.com/

43. https://foursquare.com/apps/

46. MAKE THE REAL WORLD
EASIER TO USE