this is not a checkbox, but a date field. and the hard part is, KDE needs to implement it, other desktops need to implement it too, and somehow it has to be fit into the existing linux user database that does not have a dedicated place for information like this.
it also means using older operating systems became illegal, including windows 7, xp, etc. including, if you just happen to have an old unused computer with an OS that does not yet support this thing.
this is not a checkbox, but a date field. and the hard part is, KDE needs to implement it, other desktops need to implement it too, and somehow it has to be fit into the existing linux user database that does not have a dedicated place for information like this.
it also means using older operating systems became illegal, including windows 7, xp, etc. including, if you just happen to have an old unused computer with an OS that does not yet support this thing.