Amal, again thanks for your patience - much appreciated. Some thoughts:
1) Is the preferred deadbolt compatible with your devices the Samsung SHS-3321 Digital Deadbolt (w/o Mechanical Override Key)? If so, I’m getting one!
2) Note: This particular deadbolt uses 4 AA batteries, estimated to last up to 10 months. Would four AA's be enough to power your keyless entry/start devices? If so, then (at least in my case) the thin, plastic emergency key provided by Honda could serve as the backup. The dimensions of the required battery case = 2.7 X 2.7 X.7 ... making it easy to Velcro under the dash, to the door, or simply place in the door's storage compartment.
3) Regarding your statement: ‘It will require 1) the customer sends us their key; we hack/send back, etc.’
a) There are other options, such as referring folks to their local area hacker groups interested in promoting their cause. This would involve building/managing a national data base (cf. 8d(A)), which would be of inestimable value to you. In my experience, the most efficient way of doing this is to ‘appoint’ one or more volunteer state/regional representatives, tasking each with the priority of collecting and growing an area data base.
b) Before retirement, the nonprofit I created utilized such a volunteer base, which I name GATE – for Global Advocacy Team (feel free to use). Given the allure of the mission, I was able to attract hundreds of folks: celebrities, members of congress, business executives, educators, etc. all of whom received an extra line on their resume in return plus the knowledge they were participating in something extraordinary.
c) If interested, I’m willing to serve as DT’s rep in this area until a more qualified individual can be identified. Everyone, however, including me needs to be thoroughly vetted first.
4) Regarding your statement: ‘to make a "real" deliberately designed solution will take months of electronics design…’ Are you familiar with The Rule of Months? It states the more distant the month, the slower it appears to move. Yet, due to the direct relationship between the distance to the observer and its rate of acceleration, it arrives at a rate of C, the speed of light … and then vanishes.
The truth is, the same number months are going to arrive and then pass … regardless of what you do, which begs the question: “In the best of all worlds, where do you want to be 6 months from now?”
5) Regarding your question: ‘How large could the market actually be if the customer must 1) get an implant, 2) possess a car with a "keyless" function, 3) spend money (ca $150) to get a spare key, 4) live with swapping batteries every 6 mos?’
a) Implant – Every person I’ve spoken with about this is intrigued, including the folks at Honda. Even so, by nature most folks wait until a hole is actually created before jumping in, throwing a bit of dirt, and then taking credit for the idea. Thus the need for groundbreakers: If a concept smacks of ‘truth,’ its value WILL be imagined and then wholeheartedly embraced by the ground-breaker. For such, truth is not merely a collateral benefit, but a raison d'etre (eg, Tesla, Newton, Hawking, Schrodinger, et al.), which begs the question: “How much do you believe what you’re doing is of true, universal value?”
b) Cars with a "keyless" function – You’re probably not old enough to remember when every car on earth had crank windows. And today? As you know, the rate of technology adoption continues to increase exponentially. It took 64 years for the telephone to gain 40% penetration, but only 10 years for smartphones. Today, “keyless” is even available in the Nissan Versa. The trend is clear.
c) Cost of Smart Key – Hmmm, glass half full? Does this spell opportunity, or what?
d) Swapping Batteries @ 6 mos – Need some cheese with that whine? One neighbor (also old) recently installed a self-cleaning toilet. It takes 4 AA’s. From hearing aids to Bluetooth – that’s life.
6) Regarding your statement: ‘the market segment is extremely small with all those requirements.’
Agreed … given the truth of those assumptions. In any event the future is on its way here, and my biggest concern is that when it finally arrives it may be carrying the Samsung, Honda or Hisense logo, rather than the name of its originator. How unfair.
I imagine all of this must sound blatantly obtrusive. Please know I have nothing to gain or lose by this; I only wish is to be constructive/progressive.