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In this letter we prove local indistinguishability of four orthogonalactivable bound entangled states shared among even number of parties. Allreduced density matrices of such states are maximally mixed. We further proceedto establish a multipartite quantum data hiding scheme on those states andexplore its power and limitations.

Local Indistinguishability and Possibility of Hiding cbits in Activable Bound Entangled States