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if you press the f8 key on a new m1 pro mac, it will phone home to apple and transmit your unchangeable hardware serial number. fwiw it says on the screen that it is doing this after you press f8.
@sneak is it hard bound to the music app? Is it lower level than that? If you somehow replace 'launch music' with 'launch my offline only custom music app' does it still do this?
@sneak like any time? this is the “transmit serial number to apple” key now?