jvlb writes "The BBC reports on cell phone tracking systems now available in Britain. The correspondent addresses the privacy and security issues that ensue." From the article: "With more and more children owning mobile phones, special attention needs to be given to who can track them. If you are not a genuine parent or guardian, the code requires location services to check that both the tracker and the person being tracked can prove they are consenting adults. Mr Macleod says: 'The person that is to be located has to demonstrate to the service provider they are at least 16 years old.'"
I've never been canoeing before, but I imagine there must be just a few
simple heuristics you have to remember...
Yes, don't fall out, and don't hit rocks.