What is 'far away' in Switzerland? I'm in Australia and have a small beef farm and there no way a bell could let you know where cows always are. They get into a gully on the other side of your property etc sound wont travel. I only have a small property I run as a side business vs many family farmers on thousands or 10's of thousands of acres. The really big properties get I to millions.
Also a bell doesn't stop them getting through a fence and into your neighbours property or heading bush.
A big part of this tech is pasture management. Ideally you want to keep a herd moving so they only eat the top third of pasture and move on. This can help automate that task.
Not least what they mention about real time feedback about cattle health.
I don't doubt bells are useful, but this tech is at another level of helpfulness. It's a smart phone vs yelling difference.
The big question is cost and measurable benifit. Having to mesh wifi a large property won't be cheap (maybe just water points for daily updates?), the cost per collar and how long they last and how this plays into grazing and health benifits will decide how viable this tech is.
I just want to add that mesh wifi is not necessary here. Given the amount of bandwidth needed (very little), LoRaWAN (1) with its ~3-10km range will be quite practical.
pasture management is indeed a big one, i heard that proper herding can increase drastically soil carbon intake in some cases. i do doubt however that climate management is the primary goal of most industrial farm with 1+ million cows. my comment was on the hi/low tech joke side originally, but i wonder if a technology that would allow even more industrial farming is a good thing.
bonus point: tourists love those so much you can buy smaller models at the airport.