How did OP even know that an accelerometer exists in the first place?
How to access it is undocumented.
While officially undocumented, people figured out how to access it back then, with novel uses like smacking your MacBook to change spaces (virtual desktops) or swinging the Mac around to make lightsaber noises.
- https://www.youtube.com/watch?v=6uvQTTPr9Rw
- https://osxdaily.com/2006/12/06/macsaber-turn-your-mac-into-...
(I should know, I was in university back then and swung my Mac around like an idiot, lol.)
On the first Retina MacBook Pro 15" in 2012, and moving forward with all MacBooks that were SSD-only, they removed the SMS as it was not needed.
To my knowledge, this is the first time we're hearing that Apple Silicon machines have an accelerometer on the SoC, officially or otherwise. It's also certainly not branded or marketed as the SMS was. (https://support.apple.com/en-us/100871)
Happy to be corrected on this!
The one thought that comes to mind is this: "Your warranty claim was denied because we determined that the laptop was subjected to a sudden shock."
maybe apple was preparing for "carrying-around laptop experience"?
If a pick and place machine can drop it on and reflow it, that's what you want.
see "Shipping Damage Indicators"
someWhatRandom1 xor someWhatRandom2 xor notRandom3 xor ...
should be more 'random' than just 'someWhatRandom1'
It's better to use a KDF or something. Even a block cipher should work far better than XOR.