In an emergency context where vital information is likely to change often, this seems a little strange. perhaps with a little (opt-in?) funding SMS could be used - surely that would be more available than internet
A Service Worker would give access to what could be important information vs no information. Given the nature of an emergency site it probably means a heightened chance of people losing internet availability.
If there is an updated version a Service Worker can check for that and pull it in if there is a connection.
Whilst imperfect to have potentially out of date information, that only happens if the person has no internet and the information has changed since they accessed it - I think it is worth the trade off of people not having any information.
For critical things, SMS probably makes more sense, but I'm not sure that is what they are trying to solve here.
SMS is usually displayed to the user as a linear chat history, and may not work well enough for large and complex content.
If vital information changes, it’s incredibly difficult to consolidate (where in the SMS thread was the latest update on topic XY again?)
SMS also can’t use pictures, requires stateful server infrastructure, is not easy to bookmark, is irretrievable when deleted, and can’t be shared as quickly as a URL.
I think offline access is really useful. Using time stamps and letting the user know they're offline will let them be able fo determine how stale the information their getting is
