[kingosticks]

The 2015 Garmin Edge Explore 1000 bike computer has this feature. By all accounts it was/is implemented poorly and triggers erroneously all the time. If they'd made it call the emergency services they'd have got in a lot of trouble.

Apple don't deserve any credit for the idea but deserve something for doing it well.

[Avamander]

If there's one thing Apple does well is reinventing the "wheel". Every single one of their product seems to be an improved iteration over some predecessor, I don't have any Apple devices though, I might be wrong.