I have found it works fairly well with my work scanner. However the tip is actually a little squishy; which means it is not always capable of a specifically directed tap on the screen.
it is what it is. It is universal and at a good price. I just wish it was more precise when I am writing and drawing on my iPad. I write slanted and no upright so the device does not register when I write or draw on an angle. It is my only critique.