Book excerpt: Paper Based Sensors, Volume 89, the latest release in this comprehensive series that gathers the most important issues relating to the design and application of these cost-effective devices used in many industries, including health and environment diagnostics, safety and security, chemistry, optics, electrochemistry, nanoscience and nanotechnologies, presents the latest updates in the field. Chapters in this new release include Exploring paper as a substrate for electrochemical micro-devices, Paper-based sensors for application in biological compound detection, Printed paper-based (bio)sensors: design, fabrication and applications, Paper-based electrochemical sensing devices, Multifarious aspects of electrochemical paper-based (bio)sensors, Paper Based Biosensors for Clinical and Biomedical Applications, and more.