I've seen one-manufacturer, 2024 models at least, which requires two keys in range, before a third key may be programmed.

Good idea, don't know how effective it is in reality.

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bayindirh 6 days ago | parent | next [-]

Needing two keys for a third one is not new. My 25 year old car needs two keys for adding the third, old Fiats has “red master” keys which are also required during adding keys.

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serf 6 days ago | parent | next [-]

Honda/Acura/Toyota have used similar systems for years; this is one of the reasons why cloning a key costs less flagged hours than making a new one for an owner that lost all of them : when you lose all of them you need to get the actual computer out and pair it with the ecm directly, when you clone them there is a ritual that can be done with the other keys+ the new one.

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tonyarkles 6 days ago | parent [-]

> ritual

I cannot think of a better word to describe the process. The ritual may involve some chanting. Thank you for that :D

	▲	pastage 6 days ago \| parent [-]
		Ceremony like what is done for the DNS root signing.

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dzhiurgis 6 days ago | parent | prev [-]

Man wish we could copy that key onto smartphone (Apple needs to add flipper zero's tech to iPhone) for easy keyless access.

	▲	6 days ago \| parent [-]
		[deleted]

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rootusrootus 6 days ago | parent | prev [-]

That's common, and it's often a bit stricter. E.g. my Ford Lightning has a pocket you have to put the fob into for this kind of activity. For certain things you need both fobs, so you do one, and then the other, as part of a sequence in the programming. Just being in range isn't good enough.