Everyone has had such an experience, when queuing up for mobile phone payment in the supermarket, it always feels like someone next to them is peeking; when brushing WeChat in the crowded subway, afraid of others peeking at the chat content; when touching the fish in front of the desk to play mobile phones, afraid of being inadvertently glimpsed by the boss. All in all, we are constantly worried that our privacy will be spied on.
Therefore, many people choose to put anti-peeping film on their mobile phones.
1. What is a voyeuristic membrane
The core principle of the anti-peep film is called ultra-fine blind (Microlourver) optical technology, which places the blinds as a "peek-proof structural layer" in the screen layer, and changes the wide viewing angle of the screen into a narrow viewing angle through the light angle control.
When the light is illuminated on the peeping film, most of the light is blocked by the light grid, and only a small part of the light that is basically vertically irradiated on the film can be reflected out of the interval, which has the effect of reducing the visual range of the screen and preventing peeping.
This technology is also used on the screen of ATMs to prevent people from peeking into the personal information of the account.
Therefore, the anti-peeping film has also been touted as a must-have in the dormitory, squeezing the subway artifact and office magic weapon.
2. What is the actual effect?
Say more, or depends on the actual use experience, the reporter after using the voyeuristic film for a few days, there are a few points must be told to everyone.
First of all, the anti-peeping film is definitely useful, to a treasure bought on the 48 yuan anti-peeping film as an example, holding the machine standing in the middle, the people on the left and right sides can not see the content of your mobile phone screen, in their field of vision, only pitch black.
However, the reporter has to talk about the shortcomings.
Awkward point one: anti-peeping can only work outside a certain angle of the left and right. In other words, if someone is close to you, such as standing behind you, you can still see the contents of the phone.
Awkward point two: after attaching the anti-peeping film, the brightness of the mobile phone screen will be seriously insufficient.
From the above two iPhone comparison charts can be seen, the brightness of the two has been adjusted to the same, about 50%, the screen with the peeping film will be darker than the normal tempered film display, because the screen is blocked by micro blinds in many places, we use the illuminance meter to measure, how much has the brightness dropped?
Mobile phones without a peeping film, the screen with 50% brightness is 60LUX, and with the anti-peeping film, the brightness drops to 30LUX, and the brightness drops by half.
Of course, you can also turn up the brightness of your phone to keep the screen clear.
However, when outdoors, this problem is serious, the reporter tried it, when in the sun, even if the brightness of the mobile phone screen is adjusted to the maximum of 100%, it will still feel that the brightness is not high.
If you use it for a long time, it will not only increase the heat and power consumption of the mobile phone, shorten the battery life of the mobile phone, but more importantly, your beautiful big eyes can't stand it! Originally, looking at the screen for a long time is tired enough, and the lack of brightness is more likely to cause visual fatigue.
Coupled with the fact that the anti-peeping film currently has no unified national standards, in case you are greedy and cheap to buy a quality that is not good, to put on a few ghosting, for your already bad vision, it is even worse.
There is also a very embarrassing thing is: in order to improve the high pixels and high real colors of the mobile phone screen, it is really a best effort, you spent a lot of money to buy this high-quality screen, and then pasted a film of more than 40 pieces, and instantly returned the mobile phone screen back to ten years ago.
Awkward point three: the anti-peeping film will cause some mobile phones' under-screen fingerprint recognition failure, because the optical screen fingerprint is actually through the finger reflection of the screen light to identify the operation, the anti-peeping film not only weakens the screen light, but also reduces the light reflected by the finger to the module.
In the same way, the reporter took the mobile phone with the voyeuristic film to the convenience store to buy something, and was very embarrassed to encounter the situation that the mobile phone payment code could not be swiped.
In addition to the above inconvenience, the reporter experienced it for a few days, and the most uncomfortable thing was that after watching the screen pasted with the anti-peeping film for a long time, the eyes were very tired, so they resolutely tore it off.
So in general, Curious Jun personally believes that unless you really have any special privacy that needs to be protected at all times, it is really not recommended that you use a voyeuristic membrane.
Orange Maple Interactive City Express reporter Zheng Yong Field Shi Deyong