This report discusses the advantages and disadvantages of online and offline trading, privacy and security challenges of using online services, and measures to reduce them. It also explores electronic payment systems and their applications. The report covers the suitable and unsuitable products for selling through offline and online platforms, and compares and contrasts the products and services sold through these modes. It also explains the challenges of setting online security and privacy features and measures to solve them. The report concludes with an analysis of the pros, cons, suitability, and applications of electronic payment services linked with chip implanted in the human body.