Be yourself – You can use your existing phone number and address book to securely communicate with your friends.Development is supported by users like you. Feel free – Signal is a completely independent 501c3 nonprofit.Signal is optimized to operate in the most constrained environment possible. Go fast – Messages are delivered quickly and reliably, even on slow networks.
Privacy isn’t an optional mode - it’s just the way that Signal works.
Say anything – State-of-the-art end-to-end encryption (powered by the open source Signal Protocol™) keeps your conversations secure. Signal’s advanced privacy-preserving technology is always enabled, so you can focus on sharing the moments that matter with the people who matter to you. Send and receive high-fidelity messages, participate in HD voice/video calls, and explore a growing set of new features that help you stay connected. When you install the app, it will open with a large QR code screen to allow you to link it to your phone.īecause the app is tied to your phone, and your phone number is registered with Signal through the phone app, it’s easier for people to verify that message really came from you.Millions of people use Signal every day for free and instantaneous communication anywhere in the world. The Signal desktop app is tied directly to your phone. The phone app is registered to your phone’s number, so it’s hard for someone to pretend to be you unless they have your phone. How encrypted? Signal uses its own encryption protocol that utilizes several different encryption techniques that would be very secure on their own. Messages, files, pictures, videos, stickers…everything is encrypted. Everything that goes through the Signal desktop app gets encrypted. It can only be turned back into a readable message when it hits the intended recipient’s Signal app. What you see as your message gets turned into something indecipherable when it leaves your phone. The cornerstone of Signal’s security is the end-to-end encryption. How Does The Signal Desktop App Protect Your Security?
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