... however there are certain caveats to the method. The attacker would need to know the material type of the table that the victim is typing on, as metal and w

... however there are certain caveats to the method. The attacker would need to know the material type of the table that the victim is typing on, as metal and wood surfaces produce different sound wave patterns. So I will be Kickstartering “secure desktops” with random layers of disparate materials, plywood, p-lam, and so forth, plus “secure laptops”, basically trousers with random patches of corduroy, burlap, spandex and whatever sewn onto the thighs.