Scan one card
Tap a side to photograph it. The back is optional — leave it empty for one-sided cards.
Front
Back
Scan a stack of cards
Either photograph cards one by one (all fronts in order, then all backs in the same order), or photograph a whole sheet of cards and let the app cut it. Cards are paired by position; fix any mismatch below before reading.
Sheet photo = many cards laid out on a table, photographed from straight above at full camera resolution (not a WhatsApp forward). Flip each card in place for the second photo.