iOS 12 has delivered many new features to the iPhone and iPad as we discussed here. But in addition to the more obvious changes – new alerts, screenshots, shortcuts, and others ̵
iOS 12 has made major improvements in the way the passwords are managed. Not only does the iCloud key ring have been improved, but iOS can also automatically fill passwords from third party password managers as well. (1Password, LastPass, Dashlane, etc.) When you reach a login page on a website, you will see a suggested password in the line above the keyboard, and you can tap it to automatically add it.
When you do this, you must authenticate on your device using either your Face ID or Touch ID. If you do not want to use this password, touch the key icon to the right of the prompt to display a dialog box that displays other passwords, plus a link to a compatible password manager you have installed.
Another feature transferred from macOS is the ability to propose secure passwords when creating a new login. These passwords are stored on iCloud Keychain, so you do not need to remember them. This new password system also works in apps so you do not need to remember your password to sign in to an app you just downloaded to access a service you've registered online.
Maximum Security Time – In iOS 12, the ability for iPhone or iPad is automatically to detect two-factor authentication codes sent via SMS. When you want to log in to a site using two-factor authentication, the code is sent to the quick entry field above the keyboard, so you can type it with press. Here's a video of the process:
You can send a password with AirDrop; This might be handy when you want to send a guest your secure Wi-Fi password, or whenever you want (ahem) share your Netflix password with someone. To do this, go to Settings> Password and Accounts> Website and App Password. Search for the password you want to share, and then tap the entry. Tap the Password field and you will see a menu offer to Copy or Move the password. Touch AirDrop and select the person you want to send it to.
Take care when you do this by sending the password to the correct person. In Settings> AirDrop, you should set the Receive Opportunity to Contacts only and your friends should do the same.
Finally, back in Settings> Password and Accounts> Website and App Password, you can find alerts – little triangular black icons – if you've used passwords on multiple sites. When you see these, click on the site's entry, and then click Change Password on the site to go to the website and enter a new password. IOS will suggest a secure password and save it to iCloud keychain.
Safari now offers intelligent tracking prevention, which, according to Apple, "helps prevent cross-browser tracking by restricting access to cookies and other website data." This complex system ensures that websites and advertisers can not gather in detail information about you and share it across websites.
USB restricted mode, which was added to iOS 11.4.1, is now turned on by default. This feature blocks access to USB devices that are connected to an iOS device if it has been locked for at least one hour or if the phone is set to emergency SOS mode. When this feature triggers, you must authenticate on your device to use any USB device, even when you connect your device to a Mac to sync it or back it up to iTunes.
You can now choose to install automatic iOS updates – in Settings> General> Software Update – and while this should improve security overall, we've seen a number of instances where iOS updates have caused device issues. I think it's better to wait and install them manually after the early advertisers have found out if their iPhones and iPads are still working.
Finally, Face ID now lets you create a "secondary look". This means that if you do not shave often, you can set it up to recognize yourself with or without beard. It also means that two spouses or partners can set up both faces to unlock a device.
All in all, these security enhancements, especially those around the passwords, make iOS 12 much safer and easier to work with. Get to know the new password features, and you'll find that you can save a lot of time.
And if you're interested in the nitty-gritty behind iOS security, this Apple PDF will tell you a lot more.  About Kirk McElhearn
Kirk McElhearn writes about Mac, iPod, iTunes, Books, Music and more on his blog Kirkville.
He is co-host of Intego Mac Podcast, The Next Track and PhotoActive, and a regular contributor to The Mac Security Blog, TidBITS and several other websites and publications.
Kirk has written more than twenty books, including Take Control books about iTunes, LaunchBar and Scrivener.