  Bohr's dictum "Physical phenomena are observed relative to different
experimental setups" is applied to a set of binary elements that represent the
smallest units of information. A description relative to "macroscopic" setups
of such elements is formulated. This requires the introduction of a Hilbert
space formalism. It is shown, that the Hilbert space is symmetric with respect
to the de Sitter group SO(3,2). For macroscopic setups SO(3,2) is approximated
by the Poincare group. A space-time manifold is obtained that expresses the
orientation of macroscopic setups relative to each other. Individual binary
elements can then be given a "position" relative to macroscopic reference
frames. To an observer binary elements will then exhibit properties of massive
particles. This informational approach to particle physics determines a mass
scale, delivers interaction terms for all four interactions and is, in
principle, capable of fixing coupling constants and masses. Despite its
simplicity it forms a promising basis for a theoretical model that leads beyond
the standard model.
