How to increase the touch screen area?

Hi Guys!
Is tehre any way to increase the area of the touch on the touch input for touchscreen device?
I have a project that has as buttons some tiny objects in the scene… with the mouse cursor is easy to click on it, but with the finger is very difficult to hit the right spot… and i would like to know if theres any way to increase this “clickable” area to get easier for the finger hit the right spot
Thanks

One workaround that i find is duplicate the object and scale it up a little bit, hide this object and make this one the clickable one… but i think theres another and smater way to do that!
Thanks