@chrisaldrich I was considering a system based on index #cards with date-based ID labels (both QR codes and human-readable) from a label-printer.Periodical "stocktaking" of a #Zettelkasten would have meant to feed its card stack into a #document #scanner, and the output would have been a database that you could query for the box of any given card, plus a snapshot of the current card state. Did not sound robust enough for me, though. cards document scanner zettelkasten