Is it Possible to (tap to focus) using WebCamTexture?

We need our Android/iPhone users to be able to take a photo of small texts on a piece of paper. We are using WebCamTexture to get the camera but when testing, the camera views the text all blurry. The first instinct is to tap the camera so that it focuses. Is there any way to do this using WebCamTexture? Thanks in advance!!

Answer is no. Ended up getting NatCam Unity Asset.