I have skype on my phone so that the notifications don't show up on the home screen, but it still vibrates so I know when I have a message but my mums like what's that and I'm like nothing.. Look I have no notifications.. Then, I close my laptop whenever my mum comes in because I have desktop skype now but I used to have windows 8 app that didn't really show up unless I opened it so that made no difference, also I have a 'innocent' account on my laptop that looks real and has no skype and doesn't have my google skype history or anything so if my mum ever checks my laptop, I go onto that account and just delete skype off my phone..