  Measuring the Majorana entropy $S_M=k_B\log(2^\frac{1}{2})$ may uniquely
reveal whether an initial equilibrium state of a nanoscale device is of
Majorana nature and subsequent operations deal with an essentially nonlocal
pair of non-Abelian Majorana bound states and not with trivial or other
accidental non-Abelian states. However, in realistic setups both Majorana modes
are inevitably involved in tunneling processes. We show that even when the
tunneling amplitude of one Majorana mode is significantly suppressed, the
Majorana entropy ruins and straightforward experiments will in general detect
entropy $S\ll S_M$. To avoid this general problem we present a mechanism of the
Majorana entropy revival via the tunneling phases of the Majorana modes and
demonstrate that to successfully observe the universal Majorana plateau $S=S_M$
one should intelligently tune the tunneling phases instead of leaving them
uncontrolled. Practical feasibility of appropriate Majorana entropy
measurements is supported by an example with parameters well achievable in
modern labs.
