Ready to post? 
First, try searching for your answer.
I created an account with password on a device. Later I logged into the same account from a different device and created a passkey. When I logged into the first device I didn’t see the prompt to create a passkey on that device after entering username and password. I believe auth0 doesn’t display the create passkey prompt once after a user creates a passkey on one device. They have to use cross device authentication to create passkeys on other devices. Did I understand this right or do we need to enable a property in our tenant to show the create passkey prompt on all devices even when they have passkey on other devices?