Apple encourages destruction of mint condition MacBooks while pretending green
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It's a shame to have a stack of iPhones, iPads and in the next 2-3 years these Macbooks that are unsalvageable.
Seems like a decent solution would be to prompt a user when they delete the device from iCloud "Would you like this device to become a parts donar? Selecting this option securely wipes all data from your device next time it connects to the internet and enables its various components to be recycled into other products."
You can also remove it after the fact. These are all documented on the Apple site as well, with steps to take care of when you sell your device.
The issue here is that the person running the repair store is trying to double dip. They told their customer they would destroy the device. They now can’t get the customer to unlock the device without giving up that they’re reselling it.