When reaching emergency services, the feature can send a user’s location and Medical ID, a virtual card in the Health app with a list of a user’s medical history, age, medications, and information like height and weight. It can also a notify a user’s emergency contacts, typically a person’s family, friends or doctors.
It’s unclear which emergency services or providers the system would tap into. The set of features would compete with the Garmin inReach device, which lets users send short messages or an SOS over satellite networks.
Both features are, of course, dependent on satellite availability and local regulations. They’re not designed to work in every country, and Apple has created a mechanism that will ask users to be outdoors and walk in a certain direction to help the iPhone connect to a satellite. Linking to a network also won’t always be instantaneous, with testing of the feature indicating that it could sometimes take up to one minute to work.