in detective shows they always locate the person by triangulating the cell towers their messages bounce off off...and some phones have GPS
built in...

i remember a luddite quote (well i don't remember it well enough to quote--but to paraphrase) that explained the reason it was dangerous to use a fountain pen---it compared it to electro magnetic forces and other harmful things....there are dangers everywhere

not the same as:

Some rob you with a six gun, And some with a fountain pen. ...

(the line from a song about Jessie James)