This document discusses machine to machine communication (M2M) and the Internet of Things (IoT). It notes that M2M enables physical objects to communicate wirelessly, while IoT refers to any physical object that can connect to the internet. The number of connected devices is growing rapidly compared to the world's population. Key challenges for M2M and IoT include cost control, managing many devices, security as more data is transmitted over the internet, and interpreting large amounts of complex data. The document also discusses M2M SIM cards, embedded SIMs, and challenges regarding security and vulnerabilities as physical systems become connected to computer networks and the internet.