Here is a little piece from TKD.net
Looks like LaJust is on its last legs. At this year's Korea Open, they used
Daedo electronic scoring equipment, and the response was mostly favorable.
They did not use the head hogu sensors, and instead scored head shots using
referees, just like with the LaJust system.
The only negative with Daedo is that it scores push kicks and cut kicks,
which the WTF is trying to moving away from. To their credit, they don't
want Taekwondo matches turning into push kick/cut kick ugly slug fests. But
they are working on that issue, perhaps with some sort of manual override of
points scoring by pushing type kicks, perhaps with the TA doing the
override.
Testing of Daedo is also very smooth, and takes about ten seconds to
complete. There apparently is a test function built into the system, and all
it takes is for the testees make very light contact to see if the sensors
are working properly. This in in contrast to LaJust, where even when testees
are kicking with all their might, points still aren't scored, even though
their partner doesn't move and is giving them the hogu to hit.
LaJust on the other hand, is failing miserably. The system simply does not
work. For example, I was told that this year's US Nationals was the absolute
worst ever, in terms of scoring. The only ones who support LaJust seems to
be USAT and PATU, which many believe have strong financial interests in
seeing LaJust being used at their events.
At this year's Costa Rica Open held at the end of last month, they used
LaJust, with terrible results. Again, the system simply does not work. WTF
President Choue asked for a report on the use of LaJust at this year's Costa
Rica Open, so the referees and others were polled. People were almost
unanimous in their disapproval of LaJust as a scoring system.
Back in Korea, the senior people all realize that they have a dud on their
hands with LaJust. They feel that LaJust has been unresponsive to the
concerns raised by the WTF regarding its reliability under match conditions.
I understand there is some sort of meeting next month or so on the use of
electronic scoring equipment, and perhaps then a decision will be made as to
what electronic scoring gear will be used in the 2012 London Games.
If we are going to use a particular brand of electronic scoring at the
Olympic Games, then we need to decide sooner rather than later, so that the
official electronic gear can be used at the Olympic world and regional
qualifiers.