We haven’t written about Helium in quite some time, but the unlicensed spectrum LPWAN challenger has just unveiled its new LongFi wireless networking offering. Essentially, it’s a direct challenger to LoRaWAN’s campus approach, as it seems to be focused on covering one specific geographic area, rather than a country. To this end, the LoRa types should be concerned, as it makes some big claims about its affordability, but while the LoRaWAN ecosystem is friendly with the MNO community, something like Helium is going to be chasing the systems integrators side of things – on projects rather than national rollouts. The 5kbps bandwidth means that this is suited to low data applications. However, Helium does have a plan to use a…