I followed the instructions in the video and the installation went smoothly (it requires a lot of liquid), the membrane is not even visible. The fingerprint sensor immediately recognizes it, I didn't need to recalibrate it. I believe it does not affect the sensitivity as much, compared to tempered glass, it's just a matter of getting used to it. Update: it protects against scratches, but my phone fell and the screen broke

The fingerprint captures quickly, leaving many marks underneath and scratches with the nail. I expected the membrane to be better, meaning something equivalent to the factory's.

The installation is very easy, just follow the instructions. It is almost like a gift in terms of durability, it doesn't seem like it's wearing a membrane. Truly an excellent product!! And the most important thing is that it works on Samsung phones. I wore it on my S10 plus

I do not recommend it under any circumstances... unfortunately, it significantly distorted the screen resolution to the point where I had to remove it completely after a few hours. Additionally, the plastic feel is not pleasant at all.

I do not recommend it to anyone, it is the worst thing I have ever bought from Spigen. Even the Chinese screen protector I bought fits better on the screen

Although fun in Spigen products is the worst thing I have put on a membrane. Even from Chinese. The case I have is also Spigen.
The hand does not slip and the appearance is like the surface of an orange.
The only positive thing is the easy application with the liquid, but otherwise I do not recommend it

Negatives
- I agree that it gives a strange plastic feeling to the screen without being tempered glass, so you don't feel safe that it protects your phone in a strong fall.
- It lifts at the edges despite the fact that the case is spigen.

Positives
- It is relatively easy to install with the liquid spray that comes in the package.
- It contains 2 transparent films, it is a relatively cheap product.

Conclusion
I put it on, but I will probably go for tempered glass or a different type of phone case.

Important:
If you install it and remove the trapped air bubbles, many marks appear under the film, as if a mistake has been made. After 1-2 hours, the marks disappear, so give it some time

It's not the best I have tried.. I wasn't impressed with the wet application either.
But what I really don't like is the plastic feel when you touch it.
In my opinion, the Samsung protector is much better.