By simply selecting them from your Contacts!
Instead of making annoying calls to see where they are simply use arrive to find out without disturbing them.
By selecting a contact in Arrive, they will get a unique text message request and if they also have this app, arrive will tell you their arrival information with their permission.
If they add you to their "White List" you will be able to get the arrival information without their permission.
(Those who don't have the App can find out when you will Arrive by sending you the Text Message "@Arrive")
Arrive is highly secure, the app is designed not to require any personal information, no sign up required.
Only the person you are sending Arrival Request will know and no data is collected.
Arrive takes advantage of the Google Map Services to deliver world's fastest and most accurate map information.