Today, when taking screenshots, my object told me that huawei mobile phone can take screenshots with two clicks of joint. I was full of curiosity. So how does a Huawei phone know if you’re tapping the screen with your belly or knuckles?
There are some comments about pressure, some about strength, some about area, and some about contact time on the Internet. In the trend of curiosity, I did a few experiments and almost smashed the phone.
Pressure?
If it’s pressure, it should work with the palm, a little harder. But I hit it hard with my gut, and it didn’t work.
Area?
I hit it with my little finger on the front of my hand, combined with my fingernail, but nothing happened.
Time?
It can’t be too long. It wasn’t that long.
Finally, I lunged at the screen with my knuckles, without lifting it. The screen is responding. It’s sending blue light around. I think it was picked up by the phone. Guess what? It’s probably instantaneous pressure.
Then pull the little finger belly (reduce area) fast tap (heavy pressure) do not lift, find the screen also has a response. Good. Puzzle solved.
All three conditions are correct, but you need to generate instantaneous pressure and control the contact area. It has to be a combination of all three.
The strange knowledge increased.