It's easy to criticize a company their size, but they definitely do this very very right.
Here's a post from 2006 for example, talking about accessibility in Mac OS 9: https://discussions.apple.com/thread/724948.
Here's about accessibility in Mac OS X Tiger (2005): https://en.wikipedia.org/wiki/Mac_OS_X_Tiger#Accessibility.
It was evidence to elucidate upon a baseless statement you made earlier.
Thanks to strong leadership in the accessibility team, there was an increasing buy-in from the top, and throughout the company. Today, accessibility is indeed in Apple’s DNA, but initially, there was quite a bit of genetic engineering and (dare I say it?) government regulation involved.
She has a hard time getting up from the floor if she kneels or sits down as is, one good fall from a cat tripping her or something is likely to be devastating.
(I would be very surprised if the series 3 and 4 have significantly different accelerometer hardware)
[0] https://www.anandtech.com/show/13364/apple-announces-the-app...
Maybe because they added new hardware to enable it...?
For battery life concerns, I can see them implementing some of the fall detection logic in hardware as well. For example, a high shock or shaking could trigger the fall-detection software to wake. Although, with the 60-second period, they probably wake the main processor often enough anyway that hardware detection might not save much power.