This feature gives developers the ability to access Near Field Communication (NFC) functionality of a device, such as reading and writing NFC tags as well as exchanging data between NFC capable devices.
From https://lists.webkit.org/pipermail/webkit-dev/2020-January/031007.html: > We oppose this feature and will not implement it. > > We do not believe a permission prompt is a sufficient mitigation for the serious security and privacy risks raised by this specification. In addition, we think exposing direct hardware access to the web is a bad idea and compromises the device-independence of the web platform.
<rdar://problem/95833705>