  Several explanations for the existence of Ultra High Energy Cosmic Rays
(UHECR) invoke the idea that they originate from the decay of massive particles
created in the reheating following inflation. It has been suggested that the
decay products can explain the observed isotropic flux of UHECR. We have
calculated the anisotropy expected for various models of the dark matter
distribution and find that present data are too sparse above 4 x 10^19 eV to
discriminate between different models. However, after three years of operation
of the southern part of the Pierre Auger Observatory great progress in testing
the proposals is expected.
