#Signal A signal can refer to various concepts depending on the context:

- *Signal Processing*: In engineering and technology, a signal is a function that conveys information, often in the form of electrical or digital data.

- *Signal (Messaging App)*: Signal is a popular end-to-end encrypted messaging service known for its focus on privacy and security.

- *Signal in Finance*: In finance, a signal can refer to indicators or patterns used in technical analysis to predict market trends or trading opportunities.

Which context are you interested in? Or would you like more information on a specific type of signal?