That’s actually a great idea. Especially as one is already cheaper than those yearly subscriptions for a dog tracker (at least in Germany). Sadly they are a bit too big to put on our one cat that always roams a bit far. ;-)
The radio has a range of max 1km. If there are no other devices in range to extend your reach by mesh routing, you will quickly lose track of your pet...
Maybe with a lower band radio and/or a Lora-like transmission technique these could have been made with a higher range but 1km seems ok for a festival setting
There are use cases where 1km is too short (and Garmen does make dedicated, multi-gps trackers for hunting with dogs), but for many run of the mill use cases (i.e. losing your dog on a hike) it seems great.
