What type of device is used to generate a time-sensitive password for authentication in multi-factor systems?

The device used to generate a time-sensitive password for authentication in multi-factor systems is a token. Tokens are specialized security devices that create one-time passwords (OTPs) that are valid only for a short period of time, usually ranging from 30 seconds to a few minutes. This method adds an additional layer of security because it requires not only a password but also something the user possesses (the token) to gain access to an account or system.

Tokens can come in various forms, including hardware tokens that are physical devices you carry, or software tokens that are applications on smartphones or computers. The use of time-sensitive codes significantly enhances security, as it mitigates risks associated with password theft; even if someone manages to acquire a user’s password, they would also need the current token to successfully authenticate.

In comparison, the other devices mentioned serve different functions. A hub is a basic networking device used to connect multiple Ethernet devices, allowing them to act as a single network segment. A router is designed to route data packets between different networks, performing the important function of managing traffic between networks. A switch operates at the data link layer to connect devices within a single local area network (LAN), making decisions about data flow based on MAC addresses. None of these devices