![]() (However, you can verify the safety numbers associated with a conversation to ensure you're talking directly with the person you think you are. You don't have to ask them what their Signal handle is-it's just their phone number. If you install Signal, you can see which of your contacts you can message via Signal instead of SMS. So, if you and someone else communicate via SMS, you can both install Signal and easily switch. Signal securely scans your contacts to see which of them are also Signal users-it just examines the phone numbers and sees if those phone numbers are also registered on Signal. When you sign up for Signal and install the app, it will ask for access to the contacts on your phone. That's by design-Signal is designed to be a drop-in replacement for SMS. To talk to someone on Signal, your phone number is your identifier on Signal. To sign up for Signal, you need a phone number. While your communications on Signal are private, you aren't anonymous. Signal Identifies You by Your Phone Number You can manually transfer data between devices, but that's it. In contrast, Facebook could reveal your full name, everything you've said on Facebook Messenger, a list of geographical locations you've accessed your account from-and so on.Įverything in your Signal app-messages, pictures, files, and so on-is stored locally on your phone. Signal could reveal only your account's phone number, last connection date, and account creation time. ![]() Signal tries not to.Įven if Signal is subject to a subpoena on you and forced to disclose what it knows about you, the company knows almost nothing about you and your Signal activity. Signal also offers other privacy features, including self-destructing (disappearing) messages that will automatically be removed after a period of time.įacebook Messenger collects a lot of data about you, too. But everything on Signal is encrypted, always and by default. Sure, some other messengers offer encrypted messaging as an optional feature. Only the people in the conversation can see them. Your conversations in Signal are end-to-end encrypted, which means that not even the owners of Signal can monitor them. While Signal has a very familiar interface, it's very different under the hood. Signal doesn't try to gather a bunch of data on you or show you advertisements. Unlike Facebook, Signal's owners aren't even trying to make money. Instead, Signal is developed by a non-profit foundation and is funded by donations. Signal isn't owned by a big tech company. You can have group chats with up to 1000 people and group calls with up to eight people. It's a messaging app with features like one-to-one messages, groups, stickers, photos, file transfers, voice calls, and even video calls. The user experience of Signal is just like WhatsApp, Facebook Messenger, and other popular chat apps. There's also a Signal desktop client for Windows, Mac, and Linux. Signal is available for Android, iPhone, and iPad.
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