IRL Glasses block LCD/LED screens through horizontal polarized optics. By flattening and rotating the polarized lens 90 degrees, light emitted by LCD/LED screens is blocked, making it look like the TV or computer in front of you is off. IRL Glasses are in beta. This means they are compatible with most TVs (LCD/LED) and some computers (LCD/LED). IRL glasses do not yet block smartphones or digital billboards (OLED).
https://www.kickstarter.com/projects/ivancash/irl-glasses-glasses-that-block-screens
That's why pilots can't wear polarized sunglasses.
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