Product authentication solutions compared: 8 technologies
Every product authentication vendor has a diagram in which their technology sits at the centre. This page has no centre. It lays out the eight technologies Indian brands actually consider, what each costs per unit, how much it asks of the buyer, and a plain framework for choosing by product value and channel.
Product authentication solutions fall into eight families: serialised QR codes, scratch codes, holograms, RFID and NFC tags, taggant or DNA inks, copy-detection patterns, image-based authentication that needs no label, and blockchain-backed records. For most Indian manufacturers selling through dealers and retailers, a serialised QR checked on WhatsApp is the right base because it costs under a rupee per unit, needs no app, and doubles as warranty registration and a loyalty trigger; scratch panels are added where codes are harvested from shelf stock, NFC where unit value justifies ₹8 to ₹25, and image-based authentication for stock already in the market without codes. Taggants, copy-detection patterns and blockchain are additions for specific threats, not starting points.
The eight technologies
| Technology | Per-unit cost (observed range) | Consumer friction | Where it fits | Main limitation |
|---|---|---|---|---|
| Serialised QR code | ₹0.05 to ₹0.80 | Low: phone camera or WhatsApp | Any packaged good; the default base layer | Visible code can be copied; needs ledger rules |
| Scratch code (alphanumeric or QR under panel) | ₹0.60 to ₹1.50 | Low: scratch and send | Seeds, pesticides, cosmetics, spare parts, pharma OTC | Panel can be scratched at the counter by a dishonest retailer |
| Hologram label | ₹1 to ₹4 | None to check; nothing to verify | Buyer reassurance on premium packs | Holograms are themselves counterfeited; no database |
| RFID or NFC tag | ₹8 to ₹25 (NFC); ₹3 to ₹10 (RFID inlay) | NFC: tap; RFID: reader only | High-value units, apparel, spirits, warehouse traceability | Cost; RFID needs readers, NFC needs capable phones |
| Taggant or DNA ink | ₹0.50 to ₹3 plus lab or reader | None for consumers; lab or device check | Court-grade evidence in pharma, spirits, currency-like items | Consumer cannot verify; slow and specialised |
| Copy-detection pattern | ₹0.20 to ₹1.00 plus print spec | Medium: needs steady focus | SKUs where genuine codes are reproduced one-for-one | Sensitive to phone quality and lighting |
| Image-based, no label | No packaging cost; platform per scan | Low for field staff; medium for consumers | Stock already in market, brands unable to change packaging | Verdicts are probabilistic; capture quality matters |
| Blockchain-backed record | Platform cost; no per-unit change | None; invisible to the buyer | Multi-party supply chains needing shared audit | Adds nothing to detection; the code still does the work |
Costs are ranges observed across programs Unotag runs and quotes from print and tag suppliers. They shift with volume, label size and material, and none includes the verification platform, which is a monthly subscription. The anti-counterfeit software guide explains what the platform layer does.
Notes on each
Serialised QR is the base for almost everyone because the buyer needs nothing but a phone, and because the scan that verifies also registers a warranty and, on an inner code, rewards the installer. The anti-counterfeit QR codes page covers the mechanics. Scratch codes are the same system with the code hidden until purchase; they are the norm in agri inputs and cosmetics. Holograms are a visual cue and nothing more unless they carry a serial that is checked.
RFID and NFC earn their cost in two situations: unit value above roughly ₹2,000, where a tap-to-verify experience is expected, and warehouse or carton-level traceability, where readers pay for themselves in throughput. Taggant and DNA inks are forensic tools for evidence, not consumer-facing verification. Copy-detection patterns are covered honestly in anti-copy QR codes: they work, they cost more, and they are for organised copying.
Image-based authentication compares a photo of the pack against a model of the genuine print, with no label or code, and is the only option for stock already in the market and for brands whose packaging cannot change; image-based product authentication and anti-counterfeit without QR codes cover it in depth. Blockchain records a code's history on a shared ledger; it is useful when several companies need to trust one audit trail, and it does not detect a single additional counterfeit on its own.
A selection framework
| Product value per unit | Sold through dealers and retailers | Sold direct or online | Counterfeit pattern observed |
|---|---|---|---|
| Under ₹200 (switches, fittings, sachets, small agri packs) | Serialised QR or scratch code on the carton or inner unit | Serialised QR | No code or repeated code on fakes: base layer is enough |
| ₹200 to ₹2,000 (wires, paints, lubricants, tyres, batteries, pesticides) | Serialised QR on unit plus scratch panel where harvesting is seen | Serialised QR with warranty registration | Copied genuine codes: add scratch panel, then copy-detection pattern on top SKUs |
| Above ₹2,000 (appliances, power tools, premium spirits, apparel) | Serialised QR plus NFC on the unit; QR on the carton | NFC or serialised QR with registration | Refills and relabels: tamper-evident placement of the code |
| Any value, stock already in market | Image-based authentication for field surveys | Image-based for returns inspection | Unknown: survey first, then choose the label layer |
Questions that settle the choice
- What does the counterfeit actually look like? Buy ten from the market before choosing anything. The red flags guide helps.
- Will the buyer check? If the answer is only with a reward or a warranty attached, the technology must support both.
- Can packaging change, and how fast? If not, start image-based and add codes at the next artwork cycle.
- Who else needs the data? Warranty, loyalty and sell-through teams should share the same code, which argues for serialised QR as the base.
- What is the evidence standard? If you intend to prosecute, add a forensic layer for the samples you seize.
Three stacks that come up repeatedly
- Building materials and electrical (wires, switches, pipes, paints): a visible serialised QR on the outer pack for consumer verification and warranty, an inner serialised code for the electrician, plumber or painter to scan and earn, and image-based authentication for field surveys of uncoded legacy stock. Per-unit cost stays under a rupee and the same code feeds the loyalty program described in anti-counterfeit plus loyalty on one QR.
- Agri inputs and cosmetics: a scratch-covered alphanumeric code for verification on WhatsApp or SMS, because codes are harvested from shelf stock, plus a visible marketing QR. A copy-detection pattern on the two most-copied SKUs where organised copying is confirmed.
- Automotive aftermarket and appliances: a serialised QR on the unit tied to warranty registration, NFC on units above ₹2,000 where the buyer expects tap-to-verify, and a carton-level code for distributor traceability, covered in supply chain traceability.
A pilot that settles the choice
Run the base layer on two SKUs in the two territories where fakes are worst, for one quarter. Before launch, buy thirty suspect samples and record what they look like. After launch, compare the scan ledger with the survey: how many scans per unit, where the duplicates cluster, whether unissued codes appear, and whether consumers scan at all without a reward attached. That quarter tells you which additional layer, if any, is worth its cost. It also produces the first real estimate of counterfeit share, which the cost of counterfeits method turns into a budget. A pilot of this shape is live within six to eight weeks, most of it printing lead time.
Key takeaways
- Eight technologies, one base: a serialised QR checked on WhatsApp covers most Indian brands at under a rupee a unit.
- Add scratch panels for shelf harvesting, NFC above ₹2,000 unit value, copy-detection patterns for one-for-one copies, image-based for uncoded stock.
- Holograms reassure but do not verify; blockchain audits but does not detect.
- Choose by what the counterfeit looks like and whether the buyer has a reason to check.
Frequently asked questions
What are product authentication solutions?
Technologies that let a buyer, dealer or brand confirm a unit is genuine: serialised QR codes, scratch codes, holograms, RFID and NFC tags, taggant or DNA inks, copy-detection patterns, image-based authentication and blockchain-backed records, each backed by a verification platform.
Which product authentication solution is best for Indian brands?
For most brands selling through dealers and retailers, a serialised QR verified on WhatsApp, because it costs under a rupee per unit, needs no app, and also registers warranties and triggers loyalty rewards. Other technologies are added for specific threats or unit values.
How much do product authentication solutions cost per unit?
Across programs Unotag runs, serialised QR ₹0.05 to ₹0.80, scratch codes ₹0.60 to ₹1.50, holograms ₹1 to ₹4, NFC ₹8 to ₹25, taggants ₹0.50 to ₹3 plus reader, copy-detection patterns ₹0.20 to ₹1.00. Image-based and blockchain have no per-unit packaging cost.
Is a hologram a product authentication solution?
Only partly. A hologram is a visual cue that buyers recognise, but holograms are counterfeited and there is nothing to check against. A hologram carrying a serialised code that is verified in a database is a real solution; the code does the work.
When should a brand use NFC for product authentication?
When unit value is above roughly ₹2,000 and a tap-to-verify experience is expected, or for carton-level traceability where readers pay for themselves. Below that value the ₹8 to ₹25 tag cost is hard to justify against a serialised QR.
Can products be authenticated without changing the packaging?
Yes. Image-based authentication compares a photograph of the pack against a model of the genuine print and needs no label or code. It suits stock already in the market and brands whose packaging cannot change quickly.
Does blockchain help with product authentication?
It provides a shared, tamper-evident audit trail of code events, useful when several parties must trust one record. It does not detect counterfeits by itself; the serialised code and the scan rules do that.
How do I choose a product authentication solution?
Buy counterfeits from the market to see what you are fighting, decide whether the buyer will check without a reward or warranty, confirm how fast packaging can change, and pick the base layer accordingly. Add layers only for the attack you observe.