Oregon offers electronic licenses and tags for hunting and fishing; the problem is that the app does not work reliably offline, despite advertising this feature. (It's very common to not have an Internet connection when fishing and (especially) hunting.) If the state police ask me to show them my hunting license, but I can't because the state's app won't load, did I do anything illegal?
Paper licenses and tags are available, but you have to pick paper or electronic; "electronic with paper backup" isn't an option.
(Content warning: description of hunting)
Showing the license is fairly simple, because a screenshot would likely be okay. The bigger issue is tagging; after catching a fish or killing an animal that requires tagging, you have to enter information about it into the tag. As far as I know, this must be done immediately, and there are no explicit exceptions for the app not working.