Version 4.3.16

- Beta of Passwordless OS Logon. Instead of entering their Windows password, users log in securely via Bluetooth connection to a mobile device with Duo Mobile platform biometric or PIN verification. - Beta release of Verified Duo Push in Windows Logon. Users will enter a code into Duo Mobile to approve a push request when the effective authentication methods policy requires Verified Duo Push with a verification code. - Adds certificate pinning to enhance security of the connection between the Duo for Windows Logon client and Duo's cloud service. - Now sends the Passport signature for every local authentication regardless of whether local remembered devices is enabled or checked. This removes the "Remember devices for Windows Logon" policy requirement for Duo Passport starting with the D304 cloud release.