Programmatically detect whether iOS passcode is enabled or not

Question

Rather than build a passcode directly into my app and potentially require the user to enter a passcode twice (once for the device and again for my app); I thought I might ou

Answer 1

I'm not aware of any way of getting this information directly, however I think you can probably achieve the result you are after by using side-effects of Apple's support for disk encryption. See Protecting Data Using On-Disk Encryption for details.

However this is a hack rather than designed behaviour, and there are some corner-cases it won't be aware of. I'd recommend making this feature something that's explicitly under the control of the user rather than something you enable with heuristics.