Nowadays, wireless sensor networks (WSNs) have become omnipresent. Process automation, asset tracking and wildlife monitoring are just a few examples to name. In many applications among energy-awareness, also location information is a core feature, today. Position information along with sensor data offers new opportunities in data analysis. Contrary requirements of localisation and low-power nodes bring up new challenges as accuracy is linked to the energy budget. This workshop will deliver an insight into modern WSN positioning techniques. Besides a general overview on localisation in WSNs, classical fingerprinting and received signal strength indicator (RSSI) as well as high resolution techniques are addressed. This includes theoretical basics localisation algorithms, sensor node and network design. In addition, practical challenges in applications are addressed. Fingerprinting and RSSI-based direction of arrival (DOA) are a promising approach in low-power networks and discussed in detail including propagation effects. Furthermore, high-resolution positioning is covered including phase-based DOA estimation and ranging based on UWB as well as frequency hopping signals. All named localisation techniques will be discussed for real world examples illustrating the practical relevance of the workshop content.