I highly doubt Safari will ever support this on any of it's platforms. And to be honest, I'm not sure if I will really ever miss it. I opened up the demo that

I highly doubt Safari will ever support this on any of it's platforms. And to be honest, I'm not sure if I will really ever miss it. I opened up the demo that flashed my backlight keyboard (after chrome prompted for some generic hardware permissions) and, while it was cool, I'm not entirely enthusiastic about websites being able to control my hardware like this with such low user intent.