In this advanced technical session Shane will take a develper-centric look at open source tools he has built, shared and used over the last few years of being a passkey practioner. He will cover common debugging scenarios for passkey deployments including what happens when attestation goes wrong, how to decompose and interpret message payloads between browsers and servers, and even investigating CTAP messages within the Chrome browser. Live demonstrations covering real support scenarios will be used to illustrate the value of these tools and show how root cause was determined. If you are a developer or technical support person assisting with passkey-related end user issues, this session is sure to be of interest to you!