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Given how many of those are typos I'm not sure how much advantage there is in replacing them with compressed incomprehensible strings. Typo one of these map codes and you'll end up in a different zip code and at first glance nothing will look wrong because they are designed for machines, not people.

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To some extent, this could be addressed with standard error detection/correction techniques (e.g. error-correcting codes). But that would make the strings longer and often wouldn't help until they made it to a computer anyway.

The units have GPS in them. The number of possible streets near them is pretty small, so an autocomplete or similar might work really well.

Or just a dropdown.

Well, more it would emphasize (and pretty much require) a better organized system. The lack of emphasis on proper addressing from everyone makes life pretty hard. :)

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