Receipts and records you can prove weren’t edited
Every refund, void and price change is written into a cryptographic hash chain. Change one record after the fact and the chain breaks — and an integrity check you can run any time tells you exactly where. This is the feature you want the day a number doesn't add up.
Why this is different from an "activity log"
Most POS keep an activity log. The problem: whoever can edit the data can usually edit the log too, so it proves nothing in a dispute. RetailPOS uses a SHA-256 hash chain — each audit record includes the hash of the one before it, the way a blockchain links blocks.
That linkage is what makes it tamper-evident: you can't quietly alter, insert or delete a record without breaking every hash after it. The tampering doesn't hide — it announces itself.
Run an integrity check yourself
From your back office you can walk the entire chain on demand and get a clean pass or the exact point it breaks. You don't take our word for it and you don't need us to run it — the verification is yours, any time. It's the difference between “we log that” and “here's cryptographic proof nothing was touched.”
When it earns its keep
Trusting a manager.Staff can process refunds and voids; you get a record they can't rewrite. If refunds spike on someone's shift, the trail is honest.
Disputes and chargebacks. A verifiable history of exactly what happened, when, and by whom.
Compliance.The same integrity backbone underpins digitally-verified invoicing where it's mandated — e.g. FBR Digital Invoicing in Pakistan, where each invoice carries a government-verified number and QR.
Fenced off per shop
On top of the chain, every shop's data is isolated at the database level, and actions are gated by role — owner, admin, manager, shift lead, cashier. The audit trail records who did what within that structure, so “who refunded this?” always has an answer.
FAQ
- What exactly is tamper-evident?
- Every audit record (refund, void, price change and more) is hash-chained with SHA-256 — each entry embeds the previous entry's hash. Altering, inserting or deleting a record breaks the chain from that point on, so tampering is detectable.
- Can I verify it myself?
- Yes — you can run an integrity check over the whole chain from the back office any time and see a pass or the exact break point. It doesn't depend on us.
- Does this stop someone from tampering?
- It makes tampering detectable rather than impossible — which is the point in a dispute. A changed record can't hide, because the chain no longer verifies.
- Is this related to e-invoicing?
- Same integrity backbone. Where digitally-verified invoicing is required, RetailPOS submits invoices for a government-verified number and QR — see the FBR integration for Pakistan.
More differentiators
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