Trigger

Trigger works using alerts, which can be set up quickly and activated instantly once set up. Setting up an alert (as shown by the screenshots to the left) is easy:

Enter basic information on your activity and destination (eg: I am going skiing in Vail, CO);
Set up a trigger to check on you (eg: check on me every 12 hours starting 9:00 pm tomorrow);
Set up actions to be taken based on your response (eg: if I am ok, send a text to mom).

If you have more questions on how Trigger works in areas with no network, how the alerts are received etc., check out the faq page and you should be able to find what more stuff.