Contact chip cards—also known as smart cards with contact interfaces—are widely used for secure transactions and identification. Here are their key technical characteristics:

• Microprocessor or Memory Chip:

  • Memory cards store data only (like prepaid cards).
  • Microprocessor cards have a CPU, RAM, ROM, and EEPROM, enabling data processing and secure applications.

• Communication:
  Requires physical contact with a reader via gold-plated connectors. Data is exchanged through electrical signals.

• Security Features:

  • Encryption algorithms (e.g., RSA, AES)
  • Authentication protocols
  • Tamper-resistant hardware

• Power Supply:
  Powered by the card reader during use—no internal battery needed.

• Standards Compliance:
  Follows ISO/IEC 7816 for size, shape, and communication protocols.

• Applications:
  Used in banking (EMV cards), ID cards, access control, healthcare, transportation, and more.