Board Thread:Naruto Discussions/@comment-25442883-20170422122145/@comment-27916438-20170424140714

if Madara can see trough wood clones is pretty obvious that he can see trough shadow clones as well.

and the only person that can do it in the Series is Madara he somehow learned how to distinguish Hashirama's clone from the originals,maybe because he fought him for so long,who knows,Kishimoto stopped give a dammn to explain anything anyway.