seductivebarry1 hour ago
Way back in ~2008 I wrote the Newton Virus https://www.everita.com/how-the-newton-virus-was-made + https://www.youtube.com/watch?v=eh75j6OHhRc (sorry for the broken images, need to update that site). Between that and using a hidden API to take screenshots of each individual element on your desktop (from icons, to taskbar, to windows) the effect was pretty believable. One of the most fun (and frustrating) projects I ever worked on.
swiftcoder27 minutes ago
Offtopic, but I have nostalgic feelings for the era of MacBook in the video
tmslnz48 minutes ago
Troika! Hello from a friend in London :)
krackers1 hour ago
>have a hard to find mems accelerometer managed by the sensor processing unit

How did OP even know that an accelerometer exists in the first place?

rustyhancock1 hour ago
The presence of the sensor is well documented as part of Apples Sudden Motion Sensor hard drive protection system.

How to access it is undocumented.

future10se1 hour ago
Aaackshually, the Sudden Motion Sensor was introduced on 2005 in the PowerBook G4, and continued through the intel MacBooks with hard drives.

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!

nerdsniper1 hour ago
Given that current drives don't have moving parts, what function is this serving today?
argsnd23 minutes ago
Apple has a motion sickness mitigation feature that displays dots on your screen that move based on physical motion, so it’s fairly well known that the accelerometer exists.
saagarjha1 hour ago
> the sensor lives under AppleSPUHIDDevice in the iokit registry, on vendor usage page 0xFF00, usage 3. the driver is AppleSPUHIDDriver which is part of the sensor processing unit.
greyface-2 hours ago
userbinator2 hours ago
undocumented

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."

consp1 hour ago
Back in the days this was to lock up the hard disk read/write head. Maybe a relic from those times instead?
userbinator1 hour ago
Apple is not known for backwards-compatibility, and they were already using SSDs in their laptops long before switching to ARM.
sysguest1 hour ago
idk you can just use simple liquid-container or sticker?

maybe apple was preparing for "carrying-around laptop experience"?

XorNot1 hour ago
That's an entirely different product build path compared to the electronics production line though.

If a pick and place machine can drop it on and reflow it, that's what you want.

sysguest1 hour ago
well it would be hardened when contact with air or something

see "Shipping Damage Indicators"

altairprime1 hour ago
Did it park the drive heads?
JSR_FDED47 minutes ago
If it can read your heartbeat from your wrists resting next to the trackpad, maybe it can use that as a user satisfaction signal for gratuitous UI changes.
pbhjpbhj29 minutes ago
If it's sensitive enough to read a heart beat, then surely it can be used as a covert microphone?
rcxdude0 minutes ago
Depends on the bandwidth.
rcxdude1 minute ago
depends on the bandwidth
ggm59 minutes ago
Could this be used as "shake your mac for highly random seed" bits?
c222 minutes ago
Probably not as random as you want it to be.
sysguest0 minutes ago
well wouldn't it add up?

someWhatRandom1 xor someWhatRandom2 xor notRandom3 xor ...

should be more 'random' than just 'someWhatRandom1'