I think implementing Face ID in all of its major devices is the company’s ultimate goal. If it were possible, Apple would have already nixed Touch ID. But it has had to stick around for a couple of reasons. On the iPhone SE and non-Pro iPads, it’s a cheaper alternative that lets Apple cut costs while still offering security. On Mac laptops, the screens are too thin to implement the necessary depth sensor.
Gurman doesn't think Face ID will reach more devices this year but suggests Apple could roll it out to more devices within a 'couple of years'.
It won’t happen this year, but I’d bet Face ID on the Mac is coming within a couple of years. I expect all iPhones and iPads to transition to Face ID within that timeframe, too. Eventually, a camera embedded in the screen would help differentiate Apple’s pricier devices by eliminating the notch at the top. The facial recognition sensor gives Apple two central features: security and augmented reality. Touch ID, more convenient or not, only provides the former.
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