Easy, do it all locally using local WiFi. It doesn't need cellular to work, unless they wanted to charge for this. Major companies often get cellular for pennies anyways for mass deployments, and seeing their profits they could handle that.
Easy, do it all locally using local WiFi. It doesn't need cellular to work, unless they wanted to charge for this. Major companies often get cellular for pennies anyways for mass deployments, and seeing their profits they could handle that.