Products Google APIs for Android Reference com.google.android.gms.fido.common Enums Transport The transport between the authenticator and the client. Exceptions Transport.UnsupportedTransportException Exception thrown when an unsupported or unrecognized transport is encountered. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated December 18, 2018.