SCIENCE | FACT | KNOWLEDGE on Instagram: "Undercover microphones don’t rely on invisibility—they rely on expectation blindness. Human perception filters out familiar objects like buttons, pens, eyeglasses, key fobs, or clothing seams because the brain labels them as “non‑threat.” Engineers exploit this by embedding microphones where acoustics are already favorable and attention is naturally low. Vibration isolation, directional pickup, and noise‑filtering algorithms do the rest. The real camoufl

How Glasses Changed The World Forever