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celaconacr t1_irti6tt wrote

Reply to comment by other_usernames_gone in Some iPhone 14 users say the crash detection feature has triggered false alarms and called 911 during rollercoaster rides or after a phone drop while driving by speckz

I don't think you could detect the force direction quickly enough to do that.

On a static phone you can detect down using gravity. When the phone is potentially spinning and moving in any direction you can't as easily separate the forces applied from the phone motion. Essentially you get an output of forces in 3d but it isn't tied to a direction directly.

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NotAHost t1_iruc8va wrote

You have an IMU that uses both a gyroscope and acceleration.

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