SecItemCopyMatching for Touch ID without passcode fallback

Question

I am using SecItemCopyMatching to fetch a keychain item protected by Touch ID.

However, if Touch ID unlocking fails (or the user selects \"Enter Passcod

Answer 1

You can try hiding the Enter Password button by doing the following:

1) define global function

static bool new_isFallbackButtonVisible(id self, SEL _cmd)
{
    return NO;
}

2) in your application:didFinishLaunchingWithOptions: replace isFallbackButtonVisible method of LAContext class with your new implementation by calling

class_replaceMethod(NSClassFromString(@"LAContext"), NSSelectorFromString(@"isFallbackButtonVisible"), (IMP)new_isFallbackButtonVisible, "v@:B");