Some of the claims made for cellular Internet of Things (IoT) technologies and services have been overblown, and many MNOs are struggling with the business case. However, the 4G-based NB-IoT and Cat-M standards do allow them to deploy machine-to-machine networks on existing 4G infrastructure, achieving wide coverage and low power consumption for applications like asset tracking. As large operators start to scale up their roll-outs, some interesting use cases and business models are emerging, which over time will drive greater confidence. Many of these relate to smart city projects, and in the past week, two US case studies have emerged in this area. The first is all about trash. Sensoneo’s first commercial NB-IoT deployment in North America uses T-Mobile’s nationwide…