I am trying to implement a concept for somebody else.
Basically, I want to create a smart surface. I want to create a surface I can throw one or more tagged objects on that should all be recognized.
I am unsure how to this and what sensors I should use. I have been thinking about using one of the NFC ICs from NXP. However, designing a circuit board and buying this IC is too expensive for our idea. I'm also unsure of whether the surface area will cause problems, because it'll be quite large (think of a small coffee table).
I've also been thinking about other ways to recognize objects, but I have not come up with anything yet. I am probably not using the correct term.
Does anyone know of a type or sensor or technique to implement this?
Note: I am a computer engineer, not an electrical engineer. I know the basics, but really not much more than that, so I prefer a solution that is available as a simple IC or a complete circuit board with the really complicated things done for me by the experts :)