Swiss Army Knife With Detachable GPS Key Fob

I was using the bottle opener on my Swiss Army Knife the other day during a conversation about GPS Key Fobs… well like all good ideas ( they happen in the middle of good conversation )
First let’s back track and talk about Swiss Army Knives… I happen to be a really big fan of them because they embody everything about my dad and grandfather that can be bottled up into an object.  My dad was an electrical engineer and an inventor, my grandfather was a machinist and wood worker… if you condense those ideas into a pocket object -poof- you have the legacy and essence of a little red pocket knife…
Technology in this day and age is becoming almost as Science Fiction as you can get, the tools and ability of the general public is edging into the realm of Batman’s Utility belt.
A piece of technology that I have always wanted was the cool quick toss magnetic tracking device, an idea used in comics as old as Dick Tracy.  The gadget essentially upon throwing it magnetizes to the surface of an object ( if metal ) and can be used to track anything ( which is essentially how Batman always finds the super villains hideout )
In the practical world you could use the technology for loads of things like: you’re going camping with your dog… you don’t want to keep him on a leash but you want him to be able to run free… You’re with your kids, you want to let them go play in the woods etc. There are tons of spur of the moment situations where this handy little gadget’s functionality could be used.
CURRENT PRODUCTS AND TECHNOLOGY
BASIC KEY-CHAIN FUNCTIONALITY THIS WOULD OPERATE LIKE
HERE IS MY MOLESKIN SKETCH:
WP_20131217_003
Swiss Army Knives are such a great pocket tool