all aspects of wireless on demand networks and systems from protocol and network design, modeling, performance evaluation, energy efficiency, QoS models and mechanisms, practical implementations, service level aspects, application use cases, to the integration of multiple wireless network technologies

Wireless on demand network systems and services have become pivotal in shaping our future networked world Starting as a niche application over Wi Fi, they can now be found in mainstream technologies like Bluetooth LE, LTE Direct and Wireless LANs, and have become the cornerstone of upcoming networking paradigms including mesh and sensor networks, cloud networks, vehicular networks, disruption tolerant and opportunistic networks, and in body networks WONS, now numbering twelve editions, has established itself as a high quality forum to address these and related challenges After a one year break, WONS is able to continue to provide a global platform for rich interactions between experts in their fields, discussing innovative contributions in a stimulating environment

This volume constitutes selected papers presented at the Second International Symposium on Emerging Information Security and Applications, EISA 2021, held in Copenhagen, Denmark, in November 2021.* The 10 full papers and 1 short paper presented in this volume were thoroughly reviewed and selected from the 36 submissions. They present a discussion on the emerging techniques, theories and applications to enhance information and application security in practice. *Due to the COVID-19 pandemic the conference was held online.

Wireless on demand network systems and services have become pivotal in shaping our future networked world Starting as a niche application over Wi Fi, they can now be found in mainstream technologies like Bluetooth LE, LTE Direct and Wireless LANs, and have become the cornerstone of upcoming networking paradigms including mesh and sensor networks, cloud networks, vehicular networks, disruption tolerant and opportunistic networks, and in body networks The challenges of this exciting research field are numerous Examples include how to make smart use of these novel technologies when multiple technologies or a mix of permanent services and on demand networking opportunities are available to a network node, how to provide robust services in highly dynamic environments, how to efficiently employ and operate heavily resource constrained devices, and how to develop robust and lightweight algorithms for self organization and adaptation