As a DIY option, there are definitely ways you could add MFA-like security with a simple switch/relay (attached to said authentication factor) in most ignition systems.

However, that wouldn't help with the "desyncing" or unlocking aspects of this attack.

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acomjean 6 days ago | parent | next [-]

I had a used VW gti (late last century) with an imobilizer. It let the engine crank but wouldn’t start. It also locked the hood from opening, leading to some panic when first getting the car and forgetting it had this feature.

It was a circular key below the steering wheel.

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_kb 6 days ago | parent | prev [-]

A physical steering wheel lock works too.

Not every problem needs a tech solution.

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arcanemachiner 6 days ago | parent | next [-]

They're basically describing a hidden kill switch/toggle, which is just as much of a tech solution as the one you're describing.

Of course, they wrapped it in some nerdy terminology, which IMO obscures the intent of their suggestion.

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bitexploder 6 days ago | parent | prev [-]

Removable steering wheel. Most thieves do not carry a steering wheel with them.

	▲	_kb 6 days ago \| parent [-]
		Rowan Atkinson approves. https://youtube.com/watch?v=yns_DhYrOpY&t=19m30s