About Smart Card

It provided potential along with memory capacity. This data is associated with either value or information or both and is stored and processed within the card’s chip, either a memory or microprocessor (CPU). The card data is transacted by a reader that is part of a computing system.

It is a type of synthetic card implanted with a computer chip that stores and transacts data among users.

Based on the way the smart card interacts with the Reader, smart cards are of two types:


These require insertion into the Card reader. The contact consists of small contact plate on the face, which is ?” in Diameter. The transmission of data takes place when this contact plate comes in contact with the connector of the reader.

Contact less:

These require close proximity of the reader. The Contact less consists of an IC Chip and antenna coil embedded into it. These cards are mainly used when transactions must be processed quickly.


Computer based readers Connect through USB or COM (Serial) ports.

Security of smart cards:

This security is not perfect, and it can be physically attacked. Reading or writing on the chip (memory, bus) analyzing timing or power consumption (DPA). There are not temper-proof, but are temper-resistant and temper-evident.


One Factor Authentication:

Its security level depends on the secret information being known only by the individual in question. With only one piece of information, it is difficult for the individual to know whether their secrets have been compromised and become known to other individuals.

Two Factor Authentication:

Within a Public Key Infrastructure (PKI), if the private key is held on a token that the individual carries with them, then a two factor authentication mechanism is provided.

Three Factor Authentication:

In general, this implies the use of biometric information about the individual such as a fingerprint, a retina scan, etc. The smart card can also be used as an excellent enabling mechanism here as well.

For example, smart card readers with embedded finger print scanners are available. The finger print template for an individual can be stored on the card, along with a private key.


Smart card technology is emerging, applications are everywhere. Smart cards enhance service and security. These ensure legal users can only access information and this information in the system is very confidential. This year, almost one billion smart cards will be produced worldwide by several large manufacturers. Currently, 95% of these cards are issued in Europe, South America, and Asia.

I am Dharaniselvi. I Completed BE in Namakkal. Now, I am working in Adsysindia from Bangalore.

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