Decal Mapping
 

How can I keep a logo applied to an object, say a sphere, from repeating a mirror image of itself on the opposite side. Its a simple pepsi graphic created in PhotoShop with an alpha channel and applied to a layered shader. I get a nice sized and positioned emblem on the spheres surface, after planar mapping, but get a mirrored version on the opposite side. Being new to this, I know it must be something very simple. Thanks in advance for any help.

you can turn of "visible in reflections" maybe in the Render Stats of you geometry.

Thanks Falott ... It seems my solution is to switch from planer mapping to spherical. Or, to just select the faces on one side of the sphere since it is a continuous surface. Turning off "Visible In Reflections" does remove the image from the inside surface but my problem was with the outer surface. Thanks for your reply.

ah now i understand :) yes, if you use textures you have to make sure no UV overlapping happens.