Two things: When using WebNFC, the namespace will only appear when the javascript is served via https:// If you try to put it in a web site URL starting http:// it is hidden. It would be very helpful to have this mentioned in the "how to" part of NFC on this web page.
Also, in Chrome, the newer version (Canary, version 78) has renamed the facilities. They are now NFCReader() and NFCWriter() at the top global level, not buried under navigator.nfc
Hope this saves some other folks a few hours of head-scratching
Two things: When using WebNFC, the namespace will only appear when the javascript is served via https:// If you try to put it in a web site URL starting http:// it is hidden. It would be very helpful to have this mentioned in the "how to" part of NFC on this web page.
Also, in Chrome, the newer version (Canary, version 78) has renamed the facilities. They are now NFCReader() and NFCWriter() at the top global level, not buried under navigator.nfc
Hope this saves some other folks a few hours of head-scratching