The TKey enumerates as a CDC ACM (serial port) to the host, so I'm afraid it doesn't work on the Chromebook from what I can remember. My colleagues would know b

The TKey enumerates as a CDC ACM (serial port) to the host, so I'm afraid it doesn't work on the Chromebook from what I can remember. My colleagues would know better. In any case it's something we aim to support one way or another, even it if means a new hardware. I suspect using Yubikey's FIDO2 functionality rather than its GnuPG smart card functionality would be reliable. I think Crostini's motivation comes down to security, which they enforce by only passing through certain USB device classes. A device enumerating as USB HID FIDO2 should work reliably, given that Google uses those kinds of USB authenticators internally.