E-Cash was a digital-based system that allowed for anonymous money transfers.
So, Jack here is using E-cash as a mode of payment.
Since it combines technological ease with security features, electronic cash is an important idea in electronic payment systems via the internet.
Electronic Cash can be used to send and receive payments between consumers and merchants, as well as for any other type of financial transaction.
For more information about E-cash refer to the link:
https://brainly.com/question/13409935
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