Gadgetory

heads-up displays or HUDs as they're more commonly referred to our display units which allow the user to monitor important information on a display without the distraction of well putting his or her head down okay so admittedly the name wasn't inspired by any particularly out-of-the-box thinking but while the name may suck HUDs themselves are a revolutionary idea and although many of you will quickly recognize heads-up displays as the interface showing you know how much health and ammo Gordon Freeman has left after clubbing four hundred baby head crabs or whatever really that's just fantasy and in the same way that truth is often cooler than fiction the origin of hud technology is actually derived from jet fighters even better now to be clear they weren't as advanced as what you'll find on your collector's edition Master Chief helmet that was totally worth the hundred and thirty dollars you spent on it but rather they were based roughly off an old Airman's machine gun reflector sight which illuminated a target in the sight when properly aligned this technique was eventually adapted by Her Majesty's Royal Air Force in the early 40s and adopted to use cathode ray tubes and phosphorus coated TV screens you know like the one your grandma still has to allow night pilots to monitor targets directly via HUD radar and then well from there on the SEALs never really stood a chance did they second gen units instead use solid lights such as from LEDs to project images onto a pilot's windscreen from an LCD display and are commonly found on commercial aircraft but due to their cost at the time were unlikely to be found in consumer goods like cars third gen HUDs on the other hand don't require projection at all anymore but instead utilize a specially coated viewing surface and a doodad called an optical waveguide which manipulates visual light spectrum waves whatever the pants that means allowing folks like automakers to display readouts like speed GPS navigation music controls or even like web content directly onto their proprietary HUD systems on the windshield which finally brings us to fourth gen systems which use lasers to display high-definition images directly on to clear surfaces like that sweet interface and Minority Report potentially making them very compact portable and versatile but heads-up displays aren't just useful when operating a vehicle or solving future crime in fact there's an ever-growing list of programs which in essence transform a person's smartphone camera into a miniature HUD and you know while yes technically any display that sits right in front of your face so you don't put your head down is technically a HUD most of them are better implemented than that and that allows people to see information about local hotspots museum exhibits or even the plentyoffish profiles of passers-by as they walk down the street and as this technology continues to develop be that in the form of laser displays transparent OLED displays holographic displays or even head mounted displays that have a screen to show you the virtual stuff with cameras mounted to the front for the view of real life more and more people will be able to enjoy the benefit of access to information without the use of their hand and assuming all goes according to plan this will even be possible without having to wear something that makes you look and feel like a total early-adopter glass hole but what if we lived in a world where you didn't have to go out in public at all to get your razors and other bathroom supplies shipped directly to your door for only a few bucks a month well that world is now and here if you're in Canada the United States Australia or New Zealand with Dollar Shave Club they've got their razors there dr. 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