  Measurements of Ultra-High Energy Cosmic Rays achieved remarkable progress in
the last 10 years. Physicists, gathered from around the world in the symposium
UHECR-2012 held at CERN on February 13-16 2012, reported their most up-to-date
observations, discussed the meaning of their findings, and identified remaining
problems and future challenges in this field. This paper is a part of the
symposium proceedings on the experimental summary and future prospects of the
UHECR study.
