Just by pressing button after startup
You can contact by around 2-4 sec video and current position at email.
If you are using Twitter with IOS,
You can post images and location information at tweets.
If you register a phone number, you can call in case of emergency.
Please use it for emergency contact and safety confirmation of time for Earthquakes, disaster prevention, accidents, involved in the incident.
Please set it beforehand such as the mail transmission destination and use it.
At initial startup, you are asked to use the current position and camera function.
Please set in advance and use.