Using an alphanumeric passcode instead of a 6-digit PIN significantly improves your iPhone's security. It's harder for someone to guess or observe your passcode when you're typing letters and numbers.
Why Use an Alphanumeric Passcode?
While a 6-digit PIN might seem secure enough, it's relatively easy for someone to observe as you type it. An alphanumeric passcode provides better security because:
- It's harder to observe over your shoulder
- It has many more possible combinations than a PIN
- It can include special characters for extra security
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