u2flib_host.exc.APDUError: 0x6985 about python-u2flib-host HOT 4 CLOSED

There's no question here, so I'm not quite sure what to do with this. You've correctly described the behavior, as it is intended to function. Feel free to re-open with a specific question if there is something that is unclear to you.

from python-u2flib-host.

indeed this is not a question but an observation :
without key preparation (untouched before calling the function), u2f.register() returns an error and the key flashes;
with key preparation (touched before calling the function), u2f.register() works without problems.

from python-u2flib-host.

U2F is designed as a non-blocking protocol, and each request must immediately return a response without delay. The intention is to periodically poll the device when touch is needed, sending the same request repeatedly until it returns successful (or a timeout is reached, and the operation is aborted). Thus, when the device is in an idle state and is touched, it will keep a user present state for a short period of time, and return a successful response to a request that comes within that time.

from python-u2flib-host.

thank you for this lighting.

from python-u2flib-host.