Liên quan Signal (EP của Twice) Signal (bài hát của Twice) Signal.MD Signal (phần mềm) Signal Iduna Park Signal (phim truyền hình) Signa Signac Sinaloa Signau (quận)
Tài liệu tham khảo WikiPedia: Signal (phần mềm) http://www.tomshardware.com/news/signal-encrypted-... https://github.com/WhisperSystems/Signal-Desktop https://github.com/signalapp/Signal-Android https://www.wired.com/story/signal-foundation-what... https://signal.org https://signal.org/blog/standalone-signal-desktop/ https://support.signal.org/hc/en-us/articles/36000... https://whispersystems.org/blog/signal/ https://www.wikidata.org/wiki/Q19718090#P1324
