>>46049867dot codes scanned into the ereader accessory. the short code has pokedex data, as well as information on the card's attacks and abilities, and also a little glossary of various TCG terms that would apply to the cards themselves. having the complete set is a lot like having a digital version of those old Player's Guides with tips on how to best use each card, it's kinda neat. and as a bonus, if you have them in perfect fits, you can actually scan them in the ereader without damaging them.
the long code (only on e-card sets and a few WotC promos) has other stuff. might make and post some webs of some expedition animations if people are interested but it's gonna be shakycam recordings of a GBA screen