When I use the above on Chrome 87 on my Windows PC I get "true"
window.PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable() .then(x=>{alert('x is '+x);console.log(x)})
Yet when I run the example referred to in the docs https://webauthndemo.appspot.com/ and click the ISUVPAA button and set a break point at line 421 in webauth.js in another tab and step through it returns "false".
I must be doing something silly but was wondering how you could get "false" when surely access to any numeric keypad (to enter a PIN) would result in a positive result?
I worked out that you receive a "false" response if you have the WebAuthn DevTools enabled. IOW have ticked the "Enable virtual authenticator environment" box. Strange?
Looks like it's down to the "Supports User Verification" tick box on the Virtual Authenticator. Looks like I need a lot more reading to get a PIN verification happening.