Hi Bent-Brent.
I understand where you're coming from.
You cant prove negligence if the app wasn't tweaked to correct standard to accept (tollerate) ambient/white noise and other associated ward equipment (electrical field) interference and if the staff were not fully understanding on the workings of the smartphone app - or the phone itself for that matter. Just my opinion. But to prove negligent behaviour, would be pretty hard in a trial situation. IMO.
