[header] How to tag friends on foursquare [title] Tap the application's icon from your smartphone's home screen to open it. [step] Once you launch the application, you should see a list of suggested nearby places you can check into. [title] Check into a place. 
[step] Tap any of the places displayed on the screen to open the place's summary page and start checking in. If you want to find a specific spot, type the name of the place you have in mind on the search bar at the top of the screen and press " done " or " enter " from the keyboard to start searching.