Yeah I get it… but a 9v battery will last about, oh, 3 days. The reality is, the hurdle isn’t the stringing of wires… any car stereo installation place can do that in 20 minutes for a tiny fee. The hurdle is hacking the key to work with the reader. It will require either 1) the customer sends their key to us and we hack it and send it back, or 2) the customer figures out a way to do it themselves.
I don’t really envision Dangerous Things becoming a car key workshop… so we’re already at a kind of high bar for customer technical capability.
The other aspect to address here is that the solution I’m proposing (using the xEM Access Controller) is a “find parts that work and make something” type solution… to make a “real” deliberately designed solution will take months of electronics design and manufacturing contracts to create a new product that is purpose-built for this specific application. At that point we could then easily design something that ran off batteries and could affix to the car window in a single simple little box… but then the question becomes: how large could the market actually be if the customer is required to 1) get an implant, 2) buy or have a car that has the “keyless” function, 3) spend the insane amount of money dealers charge to get a spare key, 4) not mind dealing with swapping batteries every 6 months?
So I agree there could be something here, but the market segment is extremely small with all those requirements. I don’t have the cash to gamble on even starting design work on it… and for even having a decent chance at launching a kickstarter you need to have a working model that looks really slick.
All that said, let me think on it…