What is Signal? How the popular encrypted messaging app keeps your texts private

The app Signal used to be niche, but has seen a boom in popularity.
Thomas Trutschel/Getty Images
Signal is a messaging app that uses end-to-end encryption to keep your messages private.
When you send a message, the only people who can see it are the recipients - not even the company that runs Signal can see what you send.
You can use the Signal app to send texts, photos, videos, and voice messages, as well as manage group chats.
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