The paper you provided a link to was very interesting. Maybe in a few years, we'll be self testing using the adapter described in the paper, instead of our trusty meters.
Although the Coag-Sense meter was tested against the results of the XS, my tests over the last few years showed a large difference between the two meters. This study made comparisons to the Coag-Sense (which uses a testing methodology that may be more accurate than the XS, after all)
It would have been good to have also compared results with the XS, which is the standard used in much of the world.
However, this is promising -- especially in locations where testing is needed, but the cost of testing would be prohibitive (third world countries, for example). If it could be made even easier to use (and this is already pretty simple), perhaps we'll be seeing a system based on this some time in the nearish future if another company tries to bury it to maintain their competitive edges (I'm not naming any specific company here, and there are a handful of companies already selling home testing products and, of course, NONE of these would try to block this type of product, would they?)