An app to give people who I care to share my location with a reasonable accurate idea of where I am, with some automation involved.
IFTTT Foursquare airport checkin recipe format:
{
"type": "foursquare",
"category": "airport",
"VenueName": "{{VenueName}} ",
"CheckinDate": "{{CheckinDate}} ",
"VenueUrl": "{{VenueUrl}}",
"VenueMapImageUrl": "{{VenueMapImageUrl}} ",
"Shout": "{{Shout}}"
}