FEITIAN AllinPass K33 Security Key - Two Factor Authenticator - USB-C, NFC, and Bluetooth with FIDO2 - Biometric Fingerprinting - Help Prevent Account Takeovers with Multi-Factor Authentication

Compré este producto para tener más seguridad en todas mis cuentas, en su momento el producto no era compatible para todos los sitios importantes, a la fecha es compatible con muchísimos sitios web pero no creo que sea para todo público, ya que la función de este producto en la actualidad la puedes realizar con los teléfonos inteligentes.

I was excited about the Feitian K33 to begin with, it seemed like it had everything, nfc, ble, usb, FIDO2, and biometrics. Reality was a bit different.FIDO2 Passwordless is going to be awesome for consumers and corporations... once it is widely used. The problem is, no one supports it as MFA/Passwordless yet other than Microsoft via Azure AD or Windows Hello. I did not test against AAD because I don't have an Azure tenant to play with. I only found one solution that consistently works with Hello, this wasn't it.First, almost all existing implentations are 2FA (pin +key) only, not passwordless. I haven't found a password tool that allows anything other than Yubikey that also does auto fill. They problem I have with the Yubikey 5 is that it relies on presence rather than a specific piece of info. (Think thumbprint to open your phone vs just a double tap). No, fingerprints aren't perfect, but at least a bad actor has to put some work in on a fingerprint scanner.2. You really don't need it with most smartphones. It's either built in or readily available with authenticator software and can be set up as the security token itself in some cases, in other cases, software running in a secure environment, handles all of the FIDO work. BLE too.3. Poor battery life makes the ble functionality pointless. Needs separate cable to charge or use as usb device.4. Sharp metal edges at external band interface not comfortable.5. Feels flimsy.6. Supports parts of Fido2 specifications, but doesn't have CTAP1 for backwards compatibility with U2F. No HOTP. No TOTP.7. Not recognized as a Windows Hello compatible thumb print reader.

I have a dozen USB-C to USB-C cables, each of which is entirely compliant (confirmed with a protocol analyzer).None worked. It's basically useless. $100 waste of plastic. Buy a yubikey or a non-battery key from FEITIAN instead.