Mobile Sim card and ATM cards are the example of

Smart cards

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Mobile SIM cards and ATM cards are both examples of portable authentication devices that allow secure access to various services. Mobile SIM cards are small chips inserted into mobile phones, enabling users to make calls, send messages, and access mobile data. Besides communication, SIM cards also hold user data and provide a secure form of identification for mobile networks. Similarly, ATM cards, often referred to as debit or credit cards, are plastic cards issued by banks that give users access to their accounts via Automated Teller Machines (ATMs) or make payments at various establishments. These cards use embedded chips or magnetic strips to authenticate and authorize transactions, ensuring secure interactions with financial systems. Thus, both SIM cards and ATM cards play vital roles in modern-day connectivity and financial operations.