What is an e-Wallet in a cashless society?

In reality, we all have at least one wallet used to store money or banknotes. In the world of cashless society, e-Wallets are like one wallet
Why does expensive oil affect Thailand more than other countries?

The protracted Russian-Ukrainian conflict is unlikely to end, and Western countries may impose more sanctions on Russia, including measures related to energy exports.
How is digital baht different from cash, cryptocurrencies, bank deposits, or e-Money?

At present, we can see that our world has come to know about digital currencies or cryptocurrencies.