  We reformulate the information causality in a more general framework by
adopting the results of signal propagation and computation in a noisy circuit.
In our framework, the information causality leads to a broad class of Tsirelson
inequalities. This fact allows us to subject information causality to
experimental scrutiny. A no-go theorem for reliable nonlocal computation is
also derived. Information causality prevents any physical circuit from
performing reliable computations.
