Apple Planning Switch to Randomized Serial Numbers for Future Products Starting in 'Early 2021'

Found on MacRumors on Sunday, 28 March 2021
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Apple's current serial number format has long allowed both customers and service providers to determine the date and location that a product was manufactured, with the first three characters representing the manufacturing location and the following two indicating the year and week of manufacture. The last four characters currently serve as a "configuration code," revealing a device's model, color, and storage capacity.

So much for transparency. That's one way to cover up the bad reputation it has with problems related to Foxconn.