Use desktop background to warn users when their Tails needs to be updated
When following up with Tails trainees a few months or more after an initial training, most if not all of them will not have updated Tails since the initial training. They are able to connect to the internet and they see the Tails upgrade prompt but unfortunately inherit the behavior learned from other operating systems: That it’s ok to choose Upgrade Later and then never update. In order to better communicate a sense of urgency to users to upgrade their Tails version, it would be ideal to go a step further than a website notice and updater prompt.
- If a version of Tails is found to be outdated, change the desktop
wallpaper color to a dark red, with a lighter
internationally-recognizable warning symbol (
⚠) and localized text explaining the need to upgrade in the center of the desktop, keeping in mind the Gnome HIG writing style: https://developer.gnome.org/hig/stable/writing-style.html.en. Assuming Gnome desktop supports SVG images, it may be possible to generate this programmatically without needing to maintain a set of static images.