"All Apple silicon-based Mac notebooks and Intel-based Mac notebooks with the Apple T2 Security Chip feature a hardware disconnect that disables the microphone whenever the lid is closed. On all 13-inch MacBook Pro and MacBook Air notebooks with the T2 chip, all MacBook notebooks with a T2 chip from 2019 or later, and Mac notebooks with Apple silicon, this disconnect is implemented in hardware alone." [1]

[1] https://support.apple.com/guide/security/hardware-microphone...

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KennyBlanken 7 months ago | parent | next [-]

That's what they said about the first gen Facetime cameras. "oooh don't worry, it's controlled in hardware!"

We have no way of verifying that anything they said in that document is true.

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jamesmotherway 7 months ago | parent | next [-]

I'm inclined to believe it. If someone managed to prove Apple's lying about it, there would be serious reputational (and other) risks to their business. I also can't imagine how they would benefit from such a fabrication.

That said, I still use "Nanoblock" webcam covers and monitor for when either the camera or microphone are activated.

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kimixa 7 months ago | parent | prev [-]

It's clear Apple define "Hardware" as "Not using the main CPU". They've pretty much admitted it's firmware based, otherwise the T2 chip simply wouldn't be involved to be mentioned.

	▲	dfox 7 months ago \| parent \| next [-]
		It is implemented in dedicated small CPLD that cannot be flashed by any software means. My understanding of relation to T2/SEP is that this CPLD serves as a kind of "IO expander" for T2/SEP which also hardwires logic like this.
	▲	swiftcoder 7 months ago \| parent \| prev [-]
		The T2 chip is mentioned in the quoted passage as an indicator of the architecture version, not necessarily an indicator that the T2 chip is directly involved

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ohhnoodont 7 months ago | parent | prev [-]

Obviously the camera is also 'disabled' when the lid is closed regardless of the controlling circuitry. So while that's a good feature, it's not relevant.