jcom
I am not a software engineer in any way, but isn't there surely some kind of available "rootkit" I have come to be informed of that would allow you to send any kind of signal anywhere based on any kind of event (such as access)?
I sadly can't tell bob that there's a trusted rootkit for him to download to his phone. Perhaps Bob could buy an identical phone and do it on that. That would cost a lot of money though.