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Re:Show HN: Beeper Mini – iMessage Client for Android by meesles on Tuesday December 05, 2023 @02:35PM (#38535831)
It's not too hard to think through -

They would need to accept and verify a flag from messages that the copycats can't reproduce. At the very least that would require a client update from anyone using official iMessage clients, which covers many millions of devices.

Unless they're able to hook into already existing flags/keys on the devices since they already verify application signatures and a whole other host of things.

Apple can probably do it, but much like jailbreaking how fast can they release breaking changes?

Re:Show HN: Beeper Mini – iMessage Client for Android by IshKebab on Wednesday December 06, 2023 @01:51AM (#38541113)
They could probably require a new check but whitelist already registered numbers.