To set up Touch ID in Outlook, navigate to the "Settings" tab within the app, and then toggle on "Require Touch ID." In addition to basic email features, Outlook provides a calendar feature and the ability to send and view documents via sharing apps like OneDrive and Dropbox, without having to actually leave the app. All of these features can now be guarded by Touch ID as well.
You can now protect your inbox with Touch ID and get the privacy you deserve. Keep your messages away from prying eyes by requiring your fingerprint or device passcode in order to access your Outlook account. To enable Touch ID, take a look at the app Settings under Preferences. (iOS 9 users) Your inbox – and dare we say it, the world – is now at your fingertips.For anyone looking to switch to Outlook to try out the Touch ID enhancement, the Microsoft app does support other email services including Yahoo! Mail, iCloud, and Gmail. Other basic updates in version 2.2.2 of the app introduce profile photos of event attendees in agenda view and a shortcut in the day and 3-day view that lets users create a new event by simply tapping and holding.
Microsoft Outlook is available for free from the App Store. [Direct Link]