[jspash]

There is something deeply satisfying to me when a non-technical solution (sending a postcard) is used to solve what could be seen as a purely technical problem.

But I suppose it depends on which department is in charge of the project. In the places I've worked, if the project is deemed to be IT-related in any way, a "meatspace" solution like this would never see the light of day.

[xanipher]

How is this a purely technical problem? I'd argue it's a purely non-technical problem, especially in the many cases where e.g. the postal worker needs some implicit knowledge to make the right decisions.