When you are sitting at a table in a cafe or in transport, and a new message arrives – no matter if it is business or personal – it will be unpleasant for you if your “deskmate” reads it. Moreover: according to statistics, 9 out of 10 information leaks in the world occur precisely as a result of peeping. Protecting yourself from someone else’s tactlessness, meanwhile, is quite simple: just buy a special glass or protective film.

I stand for glass – and here’s why: in my practice there was a case when a brand new smartphone was accidentally sandwiched in the gap between the bottom edge of the oven and its door. A kind of unexpected crash test. Closing the door, I heard a parting crunch, and opening it again, I was amazed: the screen was intact, although the protection glass looked like a diligent spider was weaving a network of cracks on it. Try this experiment with film. But no, don’t try it.

How information security glass works

But it was a lyrical digression. So, what is “information protection glass” and how does it work. Normal safety glass is usually something like a sandwich of five layers.

  • Silicone a layer to keep the glass on the smartphone screen;
  • contact a layer so that the glass does not crumble into fragments;
  • antiglare layer for better color reproduction;
  • protective layer – it is clear why;
  • oleophobic layer so that the owner does not leave fingerprints on the glass.

In the case of information security glass, one more layer is added to these five layers – optic. It hides the screen of your device from any view except direct. If you look at it sideways, at an angle of 30 or 40 degrees, the screen will appear black, white or gold.

From expensive Europeans to affordable Chinese

Gadget Guard

Gadget GuardPerhaps one of the most expensive devices of this kind are the protective glasses of the Irish manufacturer Gadget Guard. Their prices range from from 20 to 30 euros – depending on the shape of the glass. The range of glasses is not too large: it covers some models of iPhone, Samsung and LG. By the way, on Amazon glasses from Gadget Guard can be purchased at a big discount – for 12-13 eurosand their high rating speaks for itself.

link: GadgetGuard.eu

Tech Armor

Tech Armor_2Another vendor highly regarded by privacy advocates is Tech Armor. Well-established protective glass from this California manufacturer is in the area 10 $ for the device. However, the annotations to the solutions indicate that the use of such glass may make the image not clear enough. The disadvantages include an even more meager line of smartphone models for which glass is produced – in fact, this is only iPhone from X to 4.

link: techarmor.com


clearbook_3Klearlook anti-peep glasses are rated slightly lower than the previous two manufacturers, but the declared parameters are quite good: 60 degrees of viewing for the owner of the smartphone and a completely black screen for an outside observer make the information on the screen truly confidential. At the same time, the image remains clear thanks to special anti-reflective technology. The cost of these glasses fluctuates around 10-13 dollars on Amazon. I must say that this manufacturer also relies on the owners of the iPhone – are they really only concerned about the confidentiality of information?

link: Amazon


Searching on Ali

After searching for aliexpress it turned out that this is still not entirely true, although even here the main proposals relate specifically to smartphones from Apple. However, we managed to find offers for Samsung, Huawei and even Xiaomi.

On Ali, the choice turned out to be more

For example, a Chinese manufacturer Chance offers anti-spyware screens for Samsung Galaxy A8 /A8 plus and for Huawei P20 / Huawei P20 PRO. Judging by the reviews, the quality is no worse than in the previous three cases, although there is no “lifetime guarantee” here and cannot be. The screen protects your data from sideways glances at 45 degrees or less.

chance_4Link: Chance

For example, anti-spyware glass for Xiaomi Redmi 4A / 4X can be bought in just for 250 rubles. Of course, the name of the manufacturer will not tell us anything – OriWoodhowever, the parameters of the glasses presented are quite worthy: thickness – 0.33 mm, hardness – 9H, visibility – the usual 45 degrees.

oriwood_5link: OriWood

By the way, you can choose any of the nameless Chinese with a fairly high rating. The cost of such glasses fluctuates from 200 to 400 rubles, and for this money you can buy a few glasses – just in case. Plus, shipping is cheap.

Read also:

  • Film or glass on the screen: is there a difference?
  • Top 5 really indestructible smartphones: the most brutal selection

Photo: manufacturing companies, pixabay.com


anti-spyware glasses