is used by

to access keys provided by a FIDO authenticator.

is not intended to be invoked by the user, but from

A single option is supported:

Verbose mode. Causes

to print debugging messages about its progress. This is helpful in debugging problems. Multiple

options increase the verbosity. The maximum is 3.

Note that

will automatically pass the

flag to

when it has itself been placed in debug mode.

first appeared in