Comment 6 for bug 1082101

Sean, I've added that blacklist feature recently, the Nexus configurators can then decide which keys to block. The default for Onboard is to block CTRL+LALT+Fn, the virtual terminal switchers, there's usually no way back. The Nexus 7 configuration we're going to suggest has LALT+TAB blocked too. Nothing is hard-coded, though, it's all in gsettings and can be configured away.
I'll leave Onboard's task open for now, but blocking is probably the best we can do at the moment.