Signal is a social media communication tool developed by Open Whisper Systems, Signal Foundation and released in 2014.
Signal features end-to-end encryption by default. Signal is made to never collect or store any private data. Signal calls and communications are always end-to-end encrypted, private, and secure, so neither Signal nor any other third parties can access them. For how to make sure, click here.
To maintain a clean communication history, use disappearing messages. Once the countdown expires, the message will be removed from your devices. This isn’t for cases where your contact is your adversary; after all, someone who receives a disappearing message may always use another camera to take a photo of the screen just before the message disappears if they really want a record of it. Click here for how to do it.
Editing & deleting all messages is possible on Signal. If you still want to erase the message that was sent to everyone in the conversation, you can do it even if it is seen. For how to do it, click here.
Set up the Lock Screen on Signal. The Screen Lock feature of Signal makes use of the pin, passphrase, or biometric authentication on your phone (e.g., a fingerprint, TouchID, or FaceID). For how to activate it, click here.
Signal PIN is a code that supports features like identifiers that are not based on phone numbers. This means that if you ever lose or swap devices, your PIN can help you retrieve your profile, settings, contacts, and blocked users. An optional registration lock that uses a PIN can stop someone else from registering your number on your behalf. For more information and PIN change, visit here.
Signal operates the existing keyboard or Input Method Editor (IME) on your mobile device. You can activate Incognito Keyboard to stop your virtual keyboard software from monitoring your typing patterns and using that information to tailor its service if you are concerned about it. Here is how to activate it.
You can blur faces on photos using Signal. All processing takes place locally, on your own device, to protect your privacy. To achieve that, switch on “Blur faces,” and faces will be automatically detected and hidden.