Android - how teamviewer native touch works

Question

I have already read about the android.permission.INJECT_EVENTS and the usage of Instrumentation class, but with it, your app needs system sign, and special installation form into system folder. I also have read about the adb possibilities to simulate touch, swipe etc.. events, but it is a very limited function which is basically not enought for me.

My question is, that what is the technical background of (for example) teamviewer, which is usable after a normal installation from android market with only a little permission requirement. I have no idea how TeamViewer's Samsung Quicksupport can simulate touch event's.

Because I can easily imagine that computer send command to the phone, and the phone make the touch event on a coordinate.

Anybody have any idea about it how teamviewer works on android and how could I write some similar functionality to force touch events considering the fact that their application can be installed via market with little permission?

Answer 1

I guess it's a similar question as in here.

Although I find the need of "Add-on" besides the main app. This add-on written for almost every phone manufacture. can be find in here. proof to this is "Remotely control Android devices (available for Samsung, HTC, LG, ZTE, and more)" written in here

Permissions these add-on uses are:

• SurfaceFlinger
• capture secure video output
• capture video output
• press keys and control buttons
• read frame buffer

But using permissions like '' need to have a system app or to be signed with the platform certificate . Thus I can say this is why they made so many add-on (based on manufacturer {System certificate signer})

I can think of that they wrote an open source app and asked for manufacturers to sign it (Individually).