Check out Precursor (FPGA device with softcore CPU running on it for trustability). Xous (microkernel OS for Precursor) has an application called Vault that do

Check out Precursor (FPGA device with softcore CPU running on it for trustability). Xous (microkernel OS for Precursor) has an application called Vault that does FIDO2/U2F as well as password management and USB HID emulation. https://www.crowdsupply.com/sutajio-kosagi/precursor/updates/xous-release-v0-9-9-vault-authentication-app-and-more https://www.crowdsupply.com/sutajio-kosagi/precursor/updates... Much more on the dev board side and probably overkill for just this purpose but a really cool device.