Hi! To get any kind of item, like the digi-eggs required to digivolve in armor digivolution you have to find QR that have the armor digimon that digivolved with that item. QR and Barcodes from around the house or internet work, the digimon generated will depend on which stage your digimon is on, if your digimon is on champion or ultimate you have more chances to find an armor digimon. Remember that QR and barcodes can be reused once per day, if you find a barcode or qr that has a armor, you can battle it again tomorrow. Also remember to get the item drop from the digimon you have to win against it.