The Commons app should help ensuring that the user is uploading appropriate images to Commons. This could be achieved with a one time disclaimer appearing when uploading a first image in the lines of:
Remember! You can upload images to Commons when
- you are the author or the image or
- the image has an open license or is in the public domain.
Learn more at [link]
[checkbox] Yes, understood.
[Accept / Cancel buttons]
Full discussion at https://commons.wikimedia.org/wiki/Commons:Village_pump#Help_test_out_new_mobile_upload_features
Version: unspecified
Severity: enhancement