In recent years we have witnessed the rising use of networked computer devices for monitoring environments and mobile communications. These use cases require new methods for approaching sensor deployment, protocol design, and information security. Problems that arise in wireless networking environments cannot be solved with the same approaches used for wired networks due to the impact of node mobility and more rapid time variation in the communication channel. From a technical point of view, these problems require proper network and protocol design as well as analysis of the trade-offs of the network parameter choices.