If possible I wish to add an Account by taking a picture from a qrCode.
Maybe this code could be useful: https://github.com/zxing/zxing
See also Feature Request on: https://github.com/nextcloud/server/issues/4305
See also Feature Request on: https://github.com/nextcloud/android/issues/822
So I’m able to handout Caldav/Carddav/Webdav/Federation Links.
Our Club has many people without any Computer knowledge. If I setup their nextcloud access I could generate this codes to get them easy access by mobile-phone without have to deal with user names and passwords, also If I have to setup their phone.