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by ace2358
1293 days ago
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I’m aussiming you don’t use Touch ID or Face ID? I’ve been using an alphanumeric passcode for about 7 years now. I’ve gotten used to it. It’s not too long to be annoying but better than a numerical pin. Even if you used 4 numbers for an alphanumeric password, it’s still much more secure than a 6 digit pin. |
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Unfortunately, that's not the case:
If you trust the secure enclave (for the device unlock scenario) or Apple's HSMs (for the key escrow scenario), a 6-digit PIN is just as secure as a 4-character alphanumeric password. In both cases, you get 10 invalid attempts before your data is wiped, and the odds are negligibly small in either case (10/10*6 vs. 10/62*4).
If you don't, i.e. you are concerned your adversary can somehow perform a brute-force attack, you need way more than four alphanumeric characters.