Флорида Пантерз
Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.
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Fast forward a year: they get a new phone and set up the messaging app. They aren’t prompted to use a passkey because one no longer exists in their credential manager. Instead, they use phone number verification to recover their account. They are then guided through the “restore backup” flow and prompted for their passkey.
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