What threatens the use of cheap film on the screen of an expensive phone

Most mobile users prefer to use additional scratch protection on their

phone in the form of a protective film.However, few of us know what this could actually mean from a security point of view. Here is a real example from the life of one user of the Galaxy S10, which was announced not so long ago…

The updated line of Galaxy S10, presented inThis year, comes with an ultrasonic fingerprint scanner. Although this fingerprint scanner is first-class, it does not work very well with tempered glass screen protectors. But the fact is that many users can not use a smartphone without a protective film, so what then?

Accessory manufacturers use specialliquid glue to create a stronger seal between the protective protector and the display. In order not to encounter a similar problem as a user of the Galaxy S10, try not to buy a cheap protective film for 100-300 rubles.

Thus, one Galaxy S10 user recently receivedgel screen protector for $3 from eBay. After using it, it turned out that absolutely any fingerprint can unlock the phone. According to Samsung representatives, this problem is already being clarified and investigated. However, the company believes that this issue is related specifically to the cost of the protective film — 3 US dollars. Let us recall that Samsung previously warned Galaxy S10 owners about the use of unofficial protective protectors and screens.

Samsung Ultrasonic Fingerprint Scannerworks by sending sound waves to the user's finger and reading the reflected waves. However, standard glass protectors create a small gap between the finger and the display. This reduces the impact of the fingerprint sensor. In the era of full-screen devices, ultrasonic fingerprint sensors are actually a good solution. However, they are by no means ideal. However, users will have to come to terms with the fact that only plastic protectors (films) seem to allow ultrasonic fingerprint readers to work without problems.