[waterphone]

It does this by default without a subscription service in the event of a detected fall if you do not respond to an alert within a certain amount of time.

Hope nobody falls on their watch and are uninjured but break the touch sensor, preventing them from being able to cancel the 911 call…

[jdminhbg]

I would imagine you could press the digital crown to cancel as well.

[macintux]

It only calls 911 if it detects no movement after a fall, so it would have to be the motion sensors in the device that completely fail, not a touch sensor.

[waterphone]

I was referring to the failure of whatever mechanism would be used to cancel an alert that appears post-fall.

[macintux]

My point is that there is no immediate need to cancel anything if you are moving.