News flash: Honda's not the only company that stuffs handbrake-and-ignition codes into their cars. Just about all newer cars have these sorts of funky 'codes' to disable or enable various features such as stability control, or in this case, a VIN-specific code to bypass the built-in key-ID system. One that I'm willing to bet isn't highly unique and that someone with some brains could reverse-engineer or find a pattern in pretty easilly.
But this is all another reason why I look at car security as pointless once someone is inside your vehicle. You might as well just remove the ignition key entirely and replace it with a simple kill switch under the dash and a push-button wired to the starter. Nothing you can do will deter a criminal once they're inside your car.