How to turn off visualization of pressed keys?

[Android Central Question]

Hello, I am using Huawei Swipe keyboard on my android huawei tablet. I like it very much, but I don't want to have pressed keys visualized. I am afraid that if somebody sees my screen somehow this visualization will let him/ her see what I am typing for passwords. So I want to turn it off, but I don't see the option anywhere in the settings. Is there such option and where is it?