This two-volume set, CCIS 2392 and CCIS 2393, constitutes the refereed proceedings of the 4th International Conference on Smart Technologies, Systems and Applications, SmartTech-IC 2024, held in Quito, Ecuador, during December 2–4, 2024. The 68 full papers presented in these proceedings were carefully reviewed and selected from 168 submissions. They were categorized under the following topical sections:   Part I: Smart Technologies; Smart Systems. Part II: Smart Trends and Applications; Poster Session.

Table of Contents:
.- Smart Technologies. .- Industrial Anomaly Detection: Bridging OPC-UA with Classical and Deep Learning Methods. .- Developing a LoRaWAN-based Data Acquisition Device Empowered by AI. .- Developing an IoT System with LoRa and a Web Platform for Enhanced Early Detection of Forest Fires. .- An Unified Multi-Platform IoT Architecture Leveraging gRPC for Seamless Integration of LoRaWAN, MQTT, and HTTP Protocols. .- Security Vulnerability Testing Architecture in IoT Based on a Honeypot. .- Comparison of Machine Learning and Dimensionality Reduction Algorithms in the Classification of Myoelectric Hand Gestures for Prosthetic Control. .- Enhancing Rehabilitation with EMG-Driven Hand Gesture Recognition Using SVM, KNN, and MLP. .- A Prototype for Sedentary Posture Monitoring Using a Chair and Headband Sensor System. .- Diagnosis of Heart Failure: Integrating Echocardiographic and Clinical Data through Neural Networks. .- A Low Power Non-Invasive Wrist-Based Approach for Glucose Monitoring. .- Medical Waste Data Analysis in Ecuador using Sparse HJ-Biplot and Clustering Techniques. .- Development of a Signal Acquisition and Processing System to Determine the Operating Characteristic Curve of Domestic Refrigerators Axial Fans. .- Exams as a Service: Synergies between ChatGPT, and Cloud Computing for Education. .- Leveraging Web Scraping to Identify Opportunities for Young Talent to UK Digital Manufacturing. .- Evaluating Word Embedding Models in Ecuadorian Legal Texts: A Comparison of CBOW and Skip-gram for Semantic Analysis. .- Stimulation of spatial reasoning in children aged 6 to 7 using assistive technology, computer vision, and elements of Inca and Ca˜nari cultures. .- Creating a Botnet in a Virtual Environment: A Study Based on the Mirai Code. .- Attention based Tri-decoder Framework for Segmentation and Classification of Nuclei in Bladder Histology. .- Enhanced Breast Cancer Detection Using Filter-Augmented DenseNet169: Outper-forming Traditional CNN Models with Few-er Epochs. .- Windowing Based Data Augmentation Techniques to Enhance the Synthesis of Contrast Response in Contrast-Enhanced Spectral Mammography Images. .- Smart Systems. .- Detection of DDoS Attacks in Computer Networks Using Deep Learning. .- Exploring New Horizons on the Interpretation of PCA using LLM for Data Analysis. .- ChatBanker: A chatbot for efficient management of bank documents. .- Application of Machine Learning Algorithms to Detect Fake News in the Peruvian Context. .- Use of an annotation method for Spanish-language tweets concerning corruption in Peru. .- Detecting Fake News and Fact-Checking in Tweets Using Spanish Language Models: A Case Study with Ecuador Chequea and Ecuador Verifica. .- Detection of Automatically Generated Texts: A Classification-Based Approach and Text Features. .- Polyglot Persistence in Heterogeneous NoSQL Database Systems with Python. .- An intelligent mobile navigation system for visually impaired people using computer vision and deep learning for multi-label classification in park environments. .- Drone Detection and Antidrone System Using YOLO: An Effective Approach to Airspace. .- Enhancing Cellular Line Representation with Transformer-Based Text Embeddings for Precision Drug Repositioning. .- Enhanced AlexNet CNN for Accurate Detection of Parkinson’s Disease Using MRI Data.