Check four things on any suspect unit: the outer packaging and print quality, the authentication code or seal, the hardware itself, and the sourcing chain it came through. Counterfeits usually fail on print registration, misspelled or reset text, loose hardware tolerances and a supplier who cannot say where the goods originated.

Why counterfeits are a retailer problem first

A customer who buys a fake from your shop does not blame the counterfeiter. They blame you, they tell people, and you eat the return. Beyond the refund, you lose the regular, you lose the brand relationship, and you create a paper trail problem if anyone ever asks where the product came from.

The good news is that most counterfeits fail on details that a trained employee can catch during receiving, before the unit ever touches a shelf. Detection is a receiving process, not a customer service process. Build it into the back room and the problem mostly disappears.

Start with the outer packaging

Counterfeiters copy artwork, but they rarely match the production quality of a real print run. Pull one unit from any new case and compare it against a known-good reference you keep in the back.

Print and color

Registration. Look at where two colors meet. Real packaging has clean edges. Fakes often show a hairline of white or a slight color shift where layers do not line up.
Color drift. Brand colors are specified tightly. A box that looks slightly too warm, too dark or too flat next to your reference is worth stopping on.
Text quality. Zoom in on the small print. Fuzzy edges, inconsistent letter spacing, misspellings, wrong capitalization and broken grammar in the warning text are common.
Finish. Foil, emboss, spot gloss and matte lamination are expensive to reproduce well. Flat, thin or peeling finishes are a flag.

Codes, seals and closures

Authentication codes. If the brand uses a scratch-off or QR verification, actually scan or check it. Do it on several units from the case, not one. Duplicated codes across units are a hard stop.
Tamper seals. Check whether the seal is the same type, placement and cut as your reference. A reapplied or hand-cut seal is obvious once you have seen a real one.
Batch and lot marking. Legitimate production carries consistent lot information. Missing, smudged or identical-across-everything lot codes are a flag.
Box construction. Cheap stock, uneven folds, glue squeeze-out and a box that does not hold its shape are all production shortcuts.

Then inspect the hardware

Packaging can be copied convincingly. Hardware tolerances are harder and more expensive to fake, so this is where the giveaways live.

Weight and balance. Fakes frequently feel lighter or oddly balanced compared to the real unit. Keep one genuine reference unit per brand you carry so staff have something to compare against.
Fit and finish. Look for visible seams, gaps between the mouthpiece and body, rough machining, sharp edges, wobble in threaded connections and paint that scratches with a fingernail.
Screen and button behavior. If the device has a display or indicator, check that the startup sequence matches the reference. Counterfeits often get the animation, color or click pattern wrong.
Charge port and connection. A port that sits crooked, a loose 510 thread, or a connection that needs force is production sloppiness, not a design choice.
Labeling on the device itself. Compare font, placement and print method against the reference. Stickers where there should be printing is a flag.

Keep your reference units in a labeled box in the back room and never sell them. One genuine sample per brand is the cheapest counterfeit detection tool you will ever buy.

The sourcing chain is the real test

Every inspection tip above is a backstop. The primary control is where you buy. Counterfeits enter retail through informal channels: a cold call offering deep discounts, a social media seller, a cash deal at a trade show, an online listing with no business address and no phone number.

Ask any new supplier these questions before you place an order:

Where are you physically located? A real address you can look at is a baseline. Westline operates from 2701 Warren Ave, Dallas, TX 75215, and answers at (737) 413-9542.
Do you sell to trade buyers only? A wholesale operation that will also sell one unit to anyone is not operating as a wholesaler. Westline is trade only, 21 and over, with a $500 minimum order.
How do orders and payment work? You want documentation. Westline checkout creates an invoice and nothing is charged at submission, so there is a record of exactly what you bought before money moves.
What documentation can you provide on a given product? Ask, in writing, and keep the answer with your receiving paperwork.
Which brands do you actually carry? A defined lineup is a better sign than a supplier who claims to have everything. Westline carries STIIIZY, Jeeter, Rove, Boutiq, Muha Meds and Urban Leaf Supply on the brands page.

Pricing that sits far under every other quote you have is the loudest signal of all. Nobody sells genuine goods at a loss. If an offer is dramatically cheaper than your regular wholesale pricing, treat the gap as the explanation rather than the opportunity.

What to do when you find a suspect unit

Have a written procedure so staff do not improvise:

Quarantine the whole case, not just the unit. Bag it, label it with the date, the supplier and the invoice number, and keep it off the sales floor.
Photograph everything. Outer carton, inner packaging, the device, the codes, the invoice. Photos are your evidence if you need a credit.
Contact the supplier in writing with the invoice number and the photos. Verbal complaints leave no record.
Do not resell it at a discount. Selling a suspected counterfeit at any price transfers the liability to you, and it is the single worst decision available.
Log the incident with the supplier name so a pattern becomes visible over time.

Make it part of receiving

Train every employee who opens a case to run the same five-minute check: compare one unit to the reference, scan any authentication code, check the seal, handle the hardware, and confirm the invoice matches what is in the box. Write it on a card and tape it inside the stockroom door. New staff should be able to run the check on their first week.

Consistency matters more than expertise here. A mediocre check performed on every case catches far more than an expert check performed occasionally.

Frequently asked questions

Can a customer tell the difference?

Sometimes, and that is the problem. Regulars know how a brand normally looks and feels, and they will notice differences your staff missed. It is better to catch it in the stockroom than to have it pointed out at your counter in front of other customers.

Is a scannable QR code proof the product is genuine?

No. Codes can be copied onto multiple units. Scan several units from the same case and treat duplicate results as a failure. A code check is one signal among four, alongside packaging, hardware and sourcing.

What is the single best protection?

Buying from a defined supplier with a real address, trade-only terms and an invoice for every order. Inspection catches mistakes. Sourcing prevents them. The wholesale FAQ covers how accounts and ordering work.

Build the check into your back room

Keep one genuine reference unit per brand, run the same five-minute inspection on every case, and buy through a supplier you can call. If you want to review the lineup or ask what documentation is available on a specific product, reach the Dallas desk through the contact page.