As long as the Signal desktop app is a 420 MB[1] pile of Electron, I refuse to install it. I may be a dinosaur, but a good desktop app is a requirement. I hate typing on a touch screen.
[1] $ curl -s https://updates.signal.org/desktop/apt/dists/xenial/main/binary-amd64/Packages |
awk '/^Package: signal-desktop$/{p=1} p{print} /^$/{if(p) exit}'