So, that would be Flarm, then?
PC,
PowerFlarm is becoming very common in the gliding community in Canada, particularly after a head-on fatal collision in BC a couple of years ago.
It is ubiquitous in my club now and is very useful, providing pilots remember to turn it on!
I have a few hours experience with it, mainly in tow planes and I am impressed. I had my first alarm the other day, when I was descending towards the downwind leg and there was a glider head-on to me, also aiming for the downwind leg. I had already seen him and was planning to avoid, but he hadn't seen me, so it was it useful wake-up.
There are two drawbacks to this technology, in my opinion. One, there is a tendency to concentrate on the display at the expense of a good lookout. Two, in the case of our tow plane, there are significant blind spots behind the aircraft, where the PowerFlarm target disappears.