[AndrewDucker]

Telling home users to check that their existing smart devices will still work in 13 years seems like overkill. It seems unlikely that more than a tiny fraction of them will still be in use then, if any.

Businesses installing new smart infrastructure and devices will need to pay attention to this, and in 10-15 years they'll need to work out what to replace, of course.

[0xDEAFBEAD]

Agreed. A serious approach to this problem would be: Identify critical computers which are currently 13+ years old (most likely embedded systems). Assume that the same sorts of systems will be 13+ years old in 2038. Focus on raising awareness with that particular target audience, e.g. give talks about the 2038 problem at embedded systems conferences. Try to get it included in university curricula. Etc.