  The uncertainty principle is the most important feature of quantum mechanics,
which can be called the heart of quantum mechanics. This principle sets a lower
bound on the uncertainties of two incompatible measurement. In quantum
information theory, this principle is expressed in terms of entropic measures.
Entropic uncertainty bound can be altered by considering a particle as a
quantum memory. In this work we investigate the entropic uncertainty relation
under the relativistic motion. In relativistic uncertainty game Alice and Bob
agree on two observables, $\hat{Q}$ and $\hat{R}$, Bob prepares a particle
constructed from the free fermionic mode in the quantum state and sends it to
Alice, after sending, Bob begins to move with an acceleration $a$, then Alice
does a measurement on her particle $A$ and announces her choice to Bob, whose
task is then to minimize the uncertainty about the measurement outcomes. we
will have an inevitable increase in the uncertainty of the Alic's measurement
outcome due to information loss which was stored initially in B. In this work
we look at the Unruh effect as a quantum noise and we will characterize it as a
quantum channel.
