When everything around the world is moving towards digital, why there is a need to constantly carry hot cash with us? Carrying a higher amount of cash sometimes is not safe. Hence, the safe and easiest form of payment that can be done with a click on mobile is introduced. They are Yandex Money and PayPal.
References
- https://link.springer.com/chapter/10.1007/978-1-4302-0353-7_1
- https://interactive-plus.ru/e-articles/56/Action56-529640.pdf