You can invite someone to Signal using the "Invite Friends" menu in the app, which will send a text message or email.
To lock Signal, open its in-app settings and select "Screen Lock." It'll use the same security method and passcode that your ...
The messaging app Signal made news in March after a handful of White House officials, including Vice President JD Vance, used the app to communicate with each other (and, inadvertently, a journalist) ...