  We consider the issue of determining the D0-Dbar0 width difference Delta
Gamma_D experimentally. The current situation is reviewed and suggestions for
further study are given. We propose a number of D0 decay modes in addition to
those studied in the recent E791, FOCUS and BELLE lifetime determination
experiments. Then we address prospects for determining CF - CDS strong phase
differences, like delta_{K pi} which appears in the CLEO study of D0 -> K+ pi-
transitions. We show how to extract delta_{K* pi} with CDS data and furthermore
show when D -> K_L pi data becomes available, that delta_{K pi} can also be
obtained.
