i want to know if it is possible to make a security key out of a normal usb. i am using webauthn api for php at the moment on a windows 10 device, if you take a quick look at the demo of webauthn and try to register with an usb it wont recognize it as an security key. is there any way to fix this?
i tried using windows aplications like usbRaptor but those will only lock my pc.
Not sure what "a normal USB" actually means, but you need a purpose-built FIDO security key for FIDO2/WebAuthn.
There are many vendors including SoloKeys, HID, Yubikey, TrustKey, and many others. https://fidoalliance.org/certification/fido-certified-products/