Why no other app can do this
Other scanner apps identify cards by guessing from a photo — AI matches the image, then asks you to confirm before it saves. That confirm step is why they scan one card at a time, and why their “bulk” modes exist only for raw cards, where wrong guesses get fixed later. A graded slab deserves better than a guess: the cert on the label is the exact card, grade, and authenticity, verified by the grader. Stack Scan reads that cert directly — PSA, BGS, CGC, and TAG labels resolve instantly with nothing to confirm, which is the only reason the camera can keep rolling across a whole stack.
Stack Scan vs. every other scanner
| Other scanner apps | Slabline Stack Scan™ | |
|---|---|---|
| Graded slabs | One at a time, confirm each match | Whole stack in one sweep — certs read themselves |
| Bulk scanning | Raw cards only | Built for graded slabs |
| Identification | AI guess from a photo | The grader’s own cert — exact card, exact grade |
| The answer you get | One card’s value | The collection’s value, Score & coverage gap |
Built for what a stack is actually worth
Apps built around selling scan one card because a listing is one card. Slabline is built around holding: the number that matters is what the whole collection is worth — for tracking, for your insurance coverage gap, and for the Slabline Score that tells you how protected it is. Stack Scan exists because typing 40 certs — or confirming 40 AI guesses — is where every collector gives up. Fanning a stack isn’t.
