BuddyPress Checkins plugin allows BuddyPress members to checkin when doing post update, just like other social sites, you can add places where you visited.
BuddyPress Checkins plugin also provides for selecting place type for your members, like if you are foodies you can select food related place type and your members will able to post food related places on your website activity stream.
Once the BuddyPress Checkins plugin has been successfully configured, a “Checkin Icon” will appear alongside the input form for activity updates. Whenever the user will click on this icon, the BuddyPress Checkins plugin will be able to show all the places for your IP Address that are available for a check-in.