I also found that in an emergency you can technically use on mobile though quite painful it's better then not having the option
Oh yes, forgot to mention, using on mobile is so much easier now!!
Used to leave my pc at home, then remote desktop if I needed get to GDS asap.
What a pain, but had a few close calls, especially once when I was in SYD, my clients flight got xled, had to exit the bar to fix with remote desktop...