Good morning guys !! As for costs - we are still working out the particulars as to what level or levels we can offer. Initially we were talking about just offering an immobilizer that you could card swipe to gain access and then allow a preset time to start - still using the original key. This would be good for fleet apps where multiple people had access multiple vehicles, One of our clients owns a land development biz with maybe fifty large 'cdl' required trucks and what not on the property. In that scenario the key would be left in the truck and only the authorized cards would allow startup. At the same time if a card was lost or stolen I can just program out That card. The other scenario involves using the card as I have for full startup and keyless driving, the issue there is we have to add a secondary mechanical lock device because you have to deal with the factory column lock. Any thing we do there probably would be more secure given that it is so easy to break the pin. Either way we are shooting for under five hundred for Immobilizer systems installed and around $1,500.00 for complete. Of course this involves a card based system - not implants - you're on you're own there (I've got a scalpel if you've got the heuevos).
As for the other systems - they are similar except they are "active" rfid meaning they require there own power source. That allows much greater range. But you are still required to button start the car. This also explains the confusion over whether our keys required the battery to allow startup - they do not, only the higher line benz' with the smart card need the battery.