  Thanks to its immunity to the detection loophole, the Clauser-Horne/Eberhard
inequality plays an important role in tests of locality and in certification of
quantum information protocols based on entanglement. I describe a local model
that violates the inequality using a plausible mechanism relying upon a
parameter of the apparatus, the source emission rate. The effect is generated
through the analysis of time-tagged data using a standard windowed coincidence
counting method. Significantly, the detection times here are not functions of
the measurement settings, i.e., the fair coincidences assumption is satisfied.
This finding has implications for the design and interpretation of experiments
and for quantum information protocols, as it shows that the coincidence window
mechanism cannot be eliminated by a demonstration of independence of the
detection times and settings. The paper describes a reliable coincidence
counting method and shows that it delivers an accurate count of true
coincidences. Recent experimental tests of local realism based on the
Clauser-Horne/Eberhard inequality are considered and it is shown that in one
case (Christensen et al.) the emission rate is appropriately limited to ensure
valid counting, and the data supports locality; in a second case (Giustina et
al.) the experiment neglects to appropriately limit the emission rate, and the
claimed violation can be accounted for locally.
