Hi, I tested your mod because I think that'd be a great feature, I found these two game breaking problems
-reading doesn't refresh dynamically, it only works when placing the reader, and the reader needs to be next to the chest, then the reading stays as it was when placing
-mining the scanner yelds a normal combinator

mind elaborating on the first problem? I had it update the signals every 20 ticks and 240 to get the target entity by default.

I forgor to change the returned item when mining, oops. Will do a patch asap.

ok I see what you mean by the first now

Fixed in 0.1.2
much thanks for bug report.

I confirm the fix : )