Which device contains embedded technologies to store information and perform limited processing?

The correct answer is a smart card. A smart card is designed with embedded microprocessor technology, allowing it to store data securely and perform limited processing tasks. This capability enables smart cards to manage tasks related to authentication, secure transactions, and data storage directly on the card itself, making them versatile for various applications such as payment processing, identification, and access control.

In contrast, a USB drive primarily serves as a storage device without the integrated processing capabilities that a smart card has. An authentication token, while it can be used for security purposes, typically generates codes or tokens without the same level of data management and processing that smart cards can provide. Lastly, a network interface card is used for network connectivity and does not have the functionality related to data storage or processing like a smart card does. This distinction highlights why the smart card is the most appropriate choice in this context.