This is a great idea! 1723 did this as a scouting tool in 2018. We handed out a card to every team at our events and it listed our robot’s capabilities and some of our strategy preferences. They worked pretty well I think.
Yeah we printed our robot specs in 2019 on a standard index card and listed our speeds and other things teams check for, as well as a render of our robot for visual ID.
These worked extremely well when we were busy on Thursday (as last year at GNR was a snowstorm, and over 75% of our team was stuck 2 hours south). It was nice to be able to hand a card to scouters and then answer the one or two unique questions they had, instead of the same 10 questions over and over.
This has also been done in the local STEMLEY offseason event here for a while (I do not know how long) and is very much a good way to expand the interactions between teams (each team gets a pack or two free and other members of teams or spectators will buy packs to get more cards and trade with teams to get the event set. The event is run by 4039 and 5406 so they will know more about it than me on the organizing side of things. I am just a team member that has been asked about cards by probably ~10 people when we have attended (and that is just me on my team)