Imagine you have to buy new headphones, what will you do: go to the nearest store or open a browser or jump on your mobile app? More and more people today tend to choose the second variant since it takes less time and effort. The number of online-shoppers will keep growing, as e-commerce — online commercial transactions — becomes more comfortable by introducing high-tech solutions, for example, IoT-based. IoT (Internet of Things) is an ecosystem of smart devices that have access to the internet and can communicate with each other.