I've heard of the Seaver connected girth and it sounds like it would be a great asset for serious professionals, but too pricey for the average horse owner. I can't say I've heard of any of the others. I agree with Ryan, as well. I love seeing the horse industry change, adapt to, and capitalize on new technology!
I do but I think it is not necessary to use them in equestrian center. It must be way more helpful for horse owners or professional riders. One day I would like to test a connected object, maybe the saddle.
I appreciate to see equine world is evolving and attaching importance to the horse's condition and well-being. Those accessories are for the moment too pricy but I plan to buy a connecter halter, one of my horse is very sensitive and it is hard for me to understand his body's system.
I think some can be very interesting! I especially want to try the rug. It is complicated to know which rug is the best for a horse, when he should wear it or not... If the rug is connected, it would allow me to know the body's temperature and horse's state. I would know what to do! It must be a nice evolution for the horse's comfort :) I less appreciate the halter as the horse has to wear it all the time, even if he lays down, it can be dangerous.