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

Bitcoin is the most popular and the first decentralized cryptocurrency

Cryptographic algorithm

A crypto currency is a unique virtual asset designed to work as a medium of exchange.

It is used for the settlement of transactions between financial institutions

Hologram is a security feature that prevents duplication.

It is integrated chip in addition to magnetic stripe to store cardholder's information.

It is an iron based magnetic material containing encrypted data about the card holder and account number.

It is an electronic payment card where the transaction amount is deducted directly from the card holder's bank account upon authorization.

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

cash payment system and Non-cash payment system

Credit card, Debit card, Stored value card

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.