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Signal's new 'Sealed Sender' feature makes conversations anonymous
Messaging service Signal is popular with privacy-minded users. It doesn't store any record of your contacts, social graph, conversation list, location, avatar, profile name or group details. Until recently, though, one important piece of data was still visible: who is messaging whom -- kind of like having the sender's address on a physical piece of mail. The latest beta release, however, includes a feature that blocks that, too: "sealed sender."