Apple MacBook Pro recently went through a keyboard overhaul in order to fix the mechanical problems. After the tweak, the keyboards became silent while operating which would earlier emanate a tactile sound. The reason for the absence of this sound comes out to be the presence of silicon layer below the key covers.
iFixit, the online repair company, found this while dismantling a MacBook Pro. When they took off the keycap from one of the keys of the laptop, a thin silicon membrane showed up which conveys the way Apple is preventing the keys of MacBook from dust and other contaminants.
As reported by The Verge, Apple filed a patent in March which consisted of a similar mechanism for keyboard in order to protect it from getting dirty internally. The patent showed a layer of protection for the keys which can keep off the harmful particles from the vulnerable circuitry of the keys. The protective layer in question seems to be the silicon covering.
In all, three class action suits have been filed against Apple over the keyboard design defects which had been encountered in the company's MacBook models. The aforementioned mechanism could be a move to tackle the problem. However, whether the alteration is reliable is still uncertain.
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