Merchant's-electronic device that enables the e - payments. It reads the card information from EMV or magnetic strip

A magnetics tripe or chip card that holds the value of money to offer as a gift by a E - business

(i) Immediate money transfers through mobile device round the clock 24 x 7.
(ii) Can use single mobile application for accessing multiple bank accounts
(iii) Single Click Authentication for transferring of fund.
(iv) It is not required to enter the details such as Card no, Account number, IFSC etc. for every transaction.
(v) Electronic payments will become much easier without requiring a digital wallet or credit or debit card

It is used allow users to make electronic transactions quickly and securely over the Internet

Altcoins is the collective name for all cryptocurrencies that appeared after Bitcoin.

Cryptographic algorithm

Credit card is an electronic payment system normally used for retail transactions.

Micro electronic payment system and Macro electronic payment system

Payment cards are plastic cards that enable cashless payments. They are simple embossed plastic card that authenticates the card holder on behalf of card issuing company, which allows the user to make use of various financial services.

It enables customers to make payment for purchase of goods and services by means of credit and debit cards.

(i) Electronic wallets (e-wallets) or electronic purses allow users to make electronic transactions quickly and securely over the Internet through smartphones (or) computers.
(ii) The electronic wallet functions almost the same as a physical wallet in term that it holds our money
(iii) Electronic wallets were first recognized as a method for storing money in electronic form, and became popular because It provides a convenient way for online shopping.

Based on the algorithm used, it is classified into the following categories.
(i) Hash chain based micro electronic payment systems.
(ii) Hash collisions and hash sequences based micro electronic payment systems.
(iii) Shared secrete keys based micro electronic payment systems.
(iv) Probability based micro electronic payment systems.

The term electronic payment refers to a payment made from one bank account to another bank account using electronic methods forgoing the direct intervention of bank employees.