Neil Parish is resigning as an MP after being discovered to have viewed pornography on a mobile devise in the Commons Chamber.
Yet all uses of such technology needs to be banned in such circumstances. For MPs are supposed to be there to follow and potentially participate in debates and to pursue procedural avenues.
If an MP on the floor of the Commons needs to be contacted urgently, then Commons Officials can always contact them in the Chamber and the MPs concerned can leave and then use a phone or a mobile. They are supposed to be present to listen to debates and follow procedural developments.
Mobiles and the like often kill off such possibiities, with MPs following non-relevant issues.