just supply new smartphones with a human implantable chip. if the smartphone is out of range of its chip it fails to function... oh and as a bonus, the phone company will be able to identify your body if it washes up on a beach ! (the disadvantage of course is that the body part with the chip in might get taken at the same time as the phone..... so implant the chip in a body part you can manage without...)

I see at the top of the SlashDot page it says

"The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way."

So that means diddly squat too ?

I see several links to alternate TV links type sites that have been posted :-)

Watch out for Gloucestershire trading standards and police officers coming to a server near you !