Chapter 1. Mobile Application for Tour Planning using Augmented Reality -- Chapter 2. Wrapper-Naive Bayes approach to Perform Efficient Customer Behavior Prediction -- Chapter 3. ECG Acquisition Analysis on Smartphone through Bluetooth and Wireless Communication -- Chapter 4. Enhanced Security of user Authentication on Doctor E-Appointment System -- Chapter 5. Enhanced Shadow Removal for Surveillance Systems -- Chapter 6. Vehicle Speed Estimation and Tracking using Deep Learning and Computer Vision -- Chapter 7. Transparent Blockchain-based Electronic Voting System: A Smart Voting Using Ethereum -- Chapter 8. Usuage of Machine Learning Algorithms to Detect Intrusion -- Chapter 9. Speech Emotion Analyzer -- Chapter 10. A Review of Security Concerns in Smart Grid -- Chapter 11. An Efficient E-mail Spam Detection utilizing Machine Learning Approaches -- Chapter 12. Malware Prediction Analysis using AI Techniques with the effective Preprocessing and Dimensionality Reduction -- Chapter 13. Statistical Test to Analyze Gene Micro array -- Chapter 14. An Analysis on Classification models to Predict Possibility for type 2 Diabetes of a Patient -- Chapter 15. Preserve Privacy on Streaming data during the process of Mining using user defined Delta value.

This book presents the latest research in the fields of computational intelligence, ubiquitous computing models, communication intelligence, communication security, machine learning, informatics, mobile computing, cloud computing, and big data analytics. The best selected papers, presented at the International Conference on Innovative Data Communication Technologies and Application (ICIDCA 2021), are included in the book. The book focuses on the theory, design, analysis, implementation, and application of distributed systems and networks.