FESKPaste is a free browser extension designed for decoding FESK (Frequency Shift Keying) audio transmissions from a Sensor Watch directly through your microphone. This tool effectively listens for transmissions, decodes them, and seamlessly pastes the results into any active input field. Users can initiate the decoding process by pressing F9 or clicking the extension icon, making it user-friendly and accessible.

Key features include support for various modulation modes such as 4FSK and BFSK, as well as the capability to automatically paste decoded text and submit forms if desired. Additionally, it offers a configurable timeout, a microphone test, and grants permissions directly from the settings page. FESKPaste operates entirely within the browser, ensuring that no data is collected or transmitted, making it a secure option for users.