This book constitutes the refereed proceedings of the 4th International Conference on Design, Operation and Evaluation of Mobile Communications, MOBILE 2023, held as part of the 25th International Conference, HCI International 2023, which was held in Copenhagen, Denmark, during July 23-28, 2022. The total of 1578 papers and 396 posters included in the HCII 2022 proceedings was carefully reviewed and selected from 7472 submissions. The MOBILE 2023 proceedings were organized in the following topical sections: Mobile User Experience and Interaction Design; Design and Evaluation of Voice User Interfaces and Conversational AI; and Mobile Information Systems in Education, Healthcare, eCommerce and Beyond.

This proceedings LNCS 13516 constitutes the refereed proceedings of the 24th International Conference on Human-Computer Interaction, HCII 2022, which was held virtually as part of the 24th International Conference, HCII 2022, during June 26 to July 1, 2022. HCII 2022 received a total of 5583 submissions from academia, research institutes, industry, and governmental agencies from 88 countries submitted contributions, and 1276 papers and 275 posters were included in the proceedings that were published just before the start of the conference. Additionally, 296 papers and 181 posters are included in the volumes of the proceedings published after the conference, as "Late Breaking Work" (papers and posters). The contributions thoroughly cover the entire field of human-computer interaction, addressing major advances in knowledge and effective use of computers in a variety of application areas.

This book constitutes the refereed proceedings of the Third International Conference on Design, Operation and Evaluation of Mobile Communications, MOBILE 2022, held as part of the 23rd International Conference, HCI International 2022, which was held virtually in June/July 2022. The total of 1271 papers and 275 posters included in the HCII 2022 proceedings was carefully reviewed and selected from 5487 submissions. The MOBILE 2022 proceedings were organized in the following topical sections: Designing Mobile Interactions and Systems; User Experience and Adoption of Mobile Communications; Mobile Commerce and Advertising; Mobile Interactions with Agents; Emerging Mobile Technologies.

This book constitutes late breaking papers from the 23rd International Conference on Human-Computer Interaction, HCII 2021, which was held in July 2021. The conference was planned to take place in Washington DC, USA but had to change to a virtual conference mode due to the COVID-19 pandemic. A total of 5222 individuals from academia, research institutes, industry, and governmental agencies from 81 countries submitted contributions, and 1276 papers and 241 posters were included in the volumes of the proceedings that were published before the start of the conference. Additionally, 174 papers and 146 posters are included in the volumes of the proceedings published after the conference, as "Late Breaking Work" (papers and posters). The contributions thoroughly cover the entire field of HCI, addressing major advances in knowledge and effective use of computers in a variety of application areas.

This conference proceeding LNCS 12796 constitutes the thoroughly refereed proceedings of the 2nd International Conference on Design, Operation and Evaluation of Mobile Communications, MOBILE 2021 which was held as part of the 23rd HCI International Conference, HCII 2021 as a virtual event, due to COVID-19, in July 2021. The total of 1276 papers and 241 posters included in the 39 HCII 2021 proceedings volumes were carefully reviewed and selected from 5222 submissions. MOBILE 2021 includes a total of 27 papers; they were organized in topical sections named: Designing, Developing and Evaluating Mobile Interaction Systems and User Experience, Acceptance and Impact of Mobile Communications.

This book constitutes late breaking papers from the 22nd International Conference on Human-Computer Interaction, HCII 2020, which was held in July 2020. The conference was planned to take place in Copenhagen, Denmark, but had to change to a virtual conference mode due to the COVID-19 pandemic.From a total of 6326 submissions, a total of 1439 papers and 238 posters have been accepted for publication in the HCII 2020 proceedings before the conference took place. In addition, a total of 333 papers and 144 posters are included in the volumes of the proceedings published after the conference as "Late Breaking Work" (papers and posters). These contributions address the latest research and development efforts in the field and highlight the human aspects of design and use of computing systems. The 54 late breaking papers address topics such as Interaction, Knowledge and Social Media.

This LNCS 12216 constitutes the refereed proceedings of the First International Conference on Design, Operation and Evaluation of Mobile Communications, MOBILE 2020, held as part of HCI International 2020 in Copenhagen, Denmark in July 2020. The conference was held virtually due to the corona pandemic. The total of 1439 papers and 238 posters included in the 40 HCII 2020 proceedings volumes was carefully reviewed and selected from 6326 submissions. The regular papers of Design, Operation and Evaluation of Mobile Communications, MOBILE 2020, presented in this volume were organized in topical section around the subject: Design, Operation and Evaluation of Mobile Communications.

Mobile commerce transactions continue to soar, driven largely by the ever-increasing adoption and use of smartphones and tablets. The use of this technology gives consumers the flexibility to shop whenever and wherever they want. Mobile Electronic Commerce: Foundations, Development, and Applications addresses the role of industry, academia, scientists, engineers, professionals, and students in developing innovative new mobile commerce technologies and systems to further improve the consumer experience. It also discusses the impact of mobile commerce on society, economics, culture, organizations, government, industry, and our daily lives. This book brings together experts from multiple disciplines in industry and academia to stimulate new thinking in the development and application of mobile commerce technology. The book covers important mobile commerce topics, such as critical infrastructure management, mobile security issues, new applications and services, emerging development architectures, mobile business solutions, and future research opportunities. In addition to its multidisciplinary approach, the book also provides a cross-cultural approach intended to overcome cultural barriers and accelerate mobile commerce advancement in the global economy. Authors and researchers from around the world discuss a broad spectrum of methods, tools, and guidelines for designing mobile commerce systems and services in different cultures.