alt Hacker NewsI can understand notifications and vibration.
But why not Bluetooth or NFC? I can’t imagine any way those could be annoyances, or even why websites would want them outside of some extremely specialized applications.
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I'm personally a WebUSB, WebBT etc hater but I totally get why PWA developers want those features. For example, let's say you're manufacturing some sort of USB device and you need a way to flash drivers. The idea of being able to just make a webpage that can update your drivers is so appealing compared to having to ship apps on Windows, Mac, Linux, iOS and Android.
Similarly, if my bank website could do NFC tap-to-pay securely, that would be pretty cool. I can imagine lots of interesting opt-in uses for NFC in a webapp.
Arguments that these features are held back by Apple specifically in order to keep apps on the app store where they can control things and take 30% at least hold water, I think, even if that reasoning doesn't apply to Mozilla rejecting features.
BT and (although very very limited) NFC can be used for tracking and location detection.