The article explores the complexities and challenges surrounding the increasing shift towards cashlessness in Japan. It delves into the various mobile payment systems, e-money, and the efforts of the government to promote digital transactions. The story is set in the context of Japan's traditionally cash-based society now adapting tech-driven changes amidst various issues, including security concerns, diverse platforms, and learning curve for older population.

While Japan has historically been a cash-dominant economy due to a strong cultural preference for hard currency, the government has recently launched efforts to promote cashless payments. Key concerns within Japan include addressing the potential security risks and ensuring ease of use for all residents, particularly for the elderly population who may struggle with the technological shift.

In contrast, many Western countries such as the US and EU nations have a higher percentage of cashless transactions in their economies and have largely overcome the shift through gradual adoption - driven by consumer convenience. However, similar concerns exist, particularly around security, privacy, and ensuring all segments of the population can participate in the digital economy.