According to a survey by the official NIMASO Twitter account , the first film people put on their new smartphones is the least in demand for privacy protection film. NIMASO found that only a few people use privacy protection film on trains and in the city, even though it is visible. Moreover, NIMASO believes that very few people continue to use privacy protection film.
Check out the popularity trends of privacy protection films in December 2023 → 
Compared to other smartphone glass films, when using an anti-spy film, the color saturation and image quality are significantly reduced, and there is also the concern that it may affect functions such as fingerprint authentication and 2D barcode reading.
Using privacy film can help prevent the leakage of important personal information, but does it have any effect when paying with a QR code or unlocking your smartphone at convenience stores or restaurants?
Is it true that privacy films affect the reading of 2D barcodes and fingerprint authentication?
When you actually scan a 2D barcode, the app automatically adjusts the brightness of your smartphone screen, without any significant impact on your usage at that moment.
However, there are several situations when you unlock your phone with fingerprint authentication, depending on the type of fingerprint authentication technology your phone uses.
Fingerprint authentication technologies can be broadly divided into three types: capacitive, optical, and ultrasonic.
In fact, when you have a privacy film attached, only the "optical" type is affected. (The fingerprint authentication technology used in the iPhone is "capacitive," so there is no need to worry about this. "Capacitive" authentication technology is a technology in which an electrode reacts to the unevenness of a fingerprint that touches the sensor, and the movement of electric charge is measured (mapped) to confirm a match with the sample fingerprint information.)
"Optical" is a popular fingerprint unlocking technology today. Compared with "capacitive", this fingerprint authentication technology is a breakthrough, the fingerprint moves under the screen, saving space on your phone. The principle is very simple, mainly using light reflection and refraction. When you press your finger on the screen, the screen emits bright light to illuminate the fingerprint, which is reflected and refracted to the sensor under the screen, realizing fingerprint unlocking.
The principle of "Anti-Peep Glass Film"
As an anti-spy film, we would like you to first understand the principles behind why it affects the use of smartphones that use ``optical'' fingerprint authentication technology.
The privacy film uses fine micro louvers to control the direction of light emission so that it is only emitted from the front, preventing people from looking at the screen from the left or right (a certain range of light is transmitted and other light is blocked). At the same time, it also suppresses incoming light from the outside, so the screen can be clearly seen from a front angle.
In addition, it is difficult to unlock the fingerprint with wet hands, and the fingerprint unlocking of the mobile phone may fail after applying the anti-peep film. Both are caused by the refraction of light, and when the fingerprint passes through the water or film, the refraction of light will be aggravated, and it is inevitable that malfunction will occur.
In other words, the privacy film not only reduces the light from the smartphone screen, but also reduces the light from fingerprints on the screen. Before you buy a smartphone film, please choose the appropriate product according to your own needs.
The need to use anti-spy film
When you're fiddling with your smartphone on a crowded morning commuter train, you can't help but feel self-conscious about the eyes of those around you.
Smartphones often display a variety of information, such as messages between family members, entertainment news that interests you, and passwords to log into your SNS accounts. Considering the risk of information leaks, one countermeasure would be to apply a privacy screen protector.
In this case, we recommend NIMASO glass film .
NIMASO privacy film adopts the world's unique patented ultra-fine shutter optical technology, so that the information displayed on the screen is only for users to read from the front, and people looking from both sides can only see a black screen. It can effectively protect personal privacy.
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