No Serial number in dev property

[YashwanthLokam]

Hi @dainnilsson,
I am looking for serial number of the Yubico BIO FIDO series key using the latest fido2 package.

It is showing None for Serial number attribute despite the serial number on the back of the key. Is there any other way to find the Serial number?

[dainnilsson]

Not specifically with this library, but it can be done using https://github.com/Yubico/yubikey-manager, with the relevant bits being reading the DeviceInfo data: https://github.com/Yubico/yubikey-manager/blob/main/yubikit/management.py#L438 and then parsing it: https://github.com/Yubico/yubikey-manager/blob/main/yubikit/management.py#L234