I mean, it kind of makes some sense. Part of what they’re doing is checking your location, speed, bearing, etc., and–IIRC–using cell signals for some of that. That’s bandwidth, and someone has to pay for it, even if it’s not very much. OTOH, Helite makes a vest that uses a tether, and that’s going to work well enough in most cases.
I think that there might be some that have options to pay for it all up-front instead of having a subscription, but I’m not positive; I just rely on leather and Knox inserts.
I mean, it kind of makes some sense. Part of what they’re doing is checking your location, speed, bearing, etc., and–IIRC–using cell signals for some of that. That’s bandwidth, and someone has to pay for it, even if it’s not very much. OTOH, Helite makes a vest that uses a tether, and that’s going to work well enough in most cases.
I think that there might be some that have options to pay for it all up-front instead of having a subscription, but I’m not positive; I just rely on leather and Knox inserts.