> Which kind of devices are supposed to connect to Helium ? I suppose it is IoT devices, but most of them actually work perfectly fine with good old cellular ne

> Which kind of devices are supposed to connect to Helium ? I suppose it is IoT devices, but most of them actually work perfectly fine with good old cellular networks You're right that there are some IoT applications where a cellular connection makes sense. If you need to know when a vending machine needs restocking, spending $5/month on a SIM card is good business. But some things have more marginal benefits. A city might like to know which streetlights are working and which aren't. If they can get that functionality for $5 per light with no ongoing costs, that's worth it. But if it's an ongoing $5/light/month? It's probably not worth that much - after all, they get fault reports from citizens for free. Whether Helium can support the latter use case usefully I have no idea. And it's not clear to me why they need a blockchain, or whether it's good business sense to target people too miserly to use a cellular connection. But there's certainly use cases out there for connections that are cheaper than cellular connections.