With all the cost, trouble, loss-of-use, and inability to shut the vehicle off if electronics fail associated with "smart" keys, if I ever get a car that needs one I think I'd want to adapt it to start and stop with an ordinary mechanical key or other mechanism. Is there any clean, established way to do this? The most obvious solution that comes to mind is permanently mounting the original smart key inside the dash and adding an after-market ignition key unit, but are there better ways to disable the system or issues with leaving the smart key in the vehicle full-time?
closed as too broad by Zaid, Pᴀᴜʟsᴛᴇʀ2♦, vini_i, Fred Wilson, DucatiKiller Dec 14 '15 at 0:06
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