Unfortunately, that’s exactly what this new patent filing (discovered by Wccftech) with the US Patent & Trademark Office suggests. This time around, the invention is individual transparent glass keys (via TechRadar).

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While a keyboard constructed out of glass, or other “rigid transparent materials” as Apple describes them in the patent, doesn’t sound like the most comfortable thing to type on, there are some definite benefits to the concept that Apple describes in the patent. The idea is that the top of the key would be completely transparent and the glyph (letter/number/symbol) would be on the bottom of the key made out of light-blocking material. This would have the immediate benefit of preventing the issue of wearing away the markings on your keyboard.  Durability overall appears to be one of the primary focuses of this design as a harder glass or glasslike substance is going to be less prone to failure or wear than the current plastic construction. This would also allow for a thinner overall structure, perhaps gaining Apple the space it had to sacrifice when it moved away from the Butterfly keyboard. Naturally, this design also opens up substantial opportunities for backlighting with references in the patent to RGB backlights and the ability to light up specific areas of keys with varying colors and levels of brightness.  While I’m trepidatious about any change to Apple’s keyboards (having owned two Butterfly variants that had me visit the Genius Bar on multiple occasions), this does sound like an interesting concept if Apple can deliver a rigid transparent material that is comfortable to type on. As always with patent filings, these concepts are often years away from implementation if they ever see the light of day at all, so don’t look for Apple to make any keyboard changes along these lines anytime soon. 

Future MacBooks could get this wild glass keyboard - 84