touch causes many button presses

I have a project which has some sprintes as buttons (e.g. bt_buy)

I was using the mouse, i.e.

Mouse-> on left button clicked on bt_buy -> ...

This worked on PC not not on all mobiles.

so I changed mouse clicked to "Touch -> Is touching bt_buy" and set "use mouse input" to Yes.

But now when I click on my buy button in a browser with the mouse, it registers about 20 button press events!

How do I support either clicking on a button in a browser with the mouse, or tapping the finger with a mobile, without incuring many taps, only one?

What should I be using:

1) is in touch

2) on touch end

3) on touched object

4) is touching object

5) on toutch start?

Tried them all, and "on touched Object" coupled with "Use mouse input" property = yes seems to work.   The manual page descriptions of these events didnt mean anything to me, so could not go by that.

Have you closely read how events work ?.

By seeing that "On object touched" is a triggered condition, and that it kind of sounds like "On object clicked" for the Mouse, it probably was the way to go.