QR Code: Not a Magic Marketing Bullet—But Powerful When Used Right

The QR code has become one of the most popular “friction removers” in modern marketing. They turn a poster into a landing page, a menu into an order flow, a direct-mail piece into an appointment, and a trade-show booth into a lead list without asking customers to type a URL with their thumbs.

But let’s get one thing straight: QR codes are not a magic bullet. A QR doesn’t fix unclear messaging, a weak offer, a confusing landing page, or a business that isn’t ready to convert interest into action. Used poorly, QR codes add confusion. Used well, they can shorten the path from “that looks interesting” to “I’m in.”

The catch is that QR codes have also become a favorite tool for scammers, thanks to “quishing” (QR phishing). The same convenience that helps customers move quickly can also help bad actors move quickly. As Sheri Donahue of Commonwealth Sentinel puts it: “Unfortunately, with technological convenience comes significant risks.”

So how do you get the benefits without inviting trouble? Start with what QR codes are, and what they aren’t.

Why a QR code works (when they’re aligned with the goal)

At their best, QR codes do three things:

1. Reduce friction
   One scan beats typing a long URL, especially in the moment at a counter, at an event, or while standing in line.
2. Create a clean bridge from offline to online
   Print pieces, signage, product packaging, and in-person experiences can connect directly to the next step: booking, ordering, learning more, or joining a list.
3. Improve measurement
   With the right tracking, you can see what placements are working, which offers are converting, and what needs to change.

That’s the marketing upside. Now let’s talk about the downside.

The cyber security reality: the QR code is not the destination

QR codes are basically a shortcut to a URL (or an action). The problem is that a person can’t glance at a QR and know where it goes. That blind spot is exactly what scammers exploit.

Common “quishing” patterns include:

• Sticker swaps in public places: criminals place a malicious QR sticker over a legitimate code on posters, donation signs, restaurant tables, parking kiosks, or community bulletin boards.
• Spoofed login pages: the QR sticker opens a page that looks like Microsoft 365, a bank, a shipping portal, or a vendor payment page—then captures credentials.
• Sketchy downloads: QR stickers prompt users to install an app or download a file that isn’t what it claims to be.
• Targeted QR phishing: scammers send emails, texts, or printed notices with QR codes designed to direct victims to mobile devices, where they are more likely to click quickly and think less.

Sheri Donahue boils down the best defense in a single line: “Think Before You Scan: Don’t scan every QR you see.” That mindset applies to businesses as well. If you’re putting QR codes into the world, you should assume someone may try to tamper with them or imitate them.

A quick TCHQ pet peeve: QR code in digital ads (on phones)

Now, for a practical issue we see all the time: QR codes placed inside digital ads viewed on phones. If someone is already on their phone, they generally can’t scan QR codes displayed on the same screen (unless they take extra steps, such as taking a screenshot and using a secondary scanner—which most people won’t do).

If the ad is being served on mobile, your CTA should be clickable, not scannable.

Best practice:

• If it’s a mobile ad, use a button or link: “Click here” / “Tap to book” / “Tap to claim.”
• If you still want QR codes for desktop viewers, make sure the ad also includes a clear, clickable CTA and a readable URL

QR codes excel in physical spaces and cross-device moments (like a poster in a real-world location that opens an app on a phone). They are often unnecessary or inconvenient in mobile-first digital placements.

Best practices: how to use a QR code effectively and safely

Here are the guardrails that keep QR codes useful without creating a trust risk.

1) Make the destination recognizable

Whenever possible, point QR codes to a URL on your own domain (example: yourbusiness.com/schedule). Avoid random-looking links that make people uneasy.

2) Always include a human-readable URL

Print the short URL under or beside the QR. This helps in two ways:

• It increases trust (“Yes, this goes to the business site.”)
• It gives a backup path if scanning fails

3) Use dynamic codes for campaigns

Dynamic QR codes let you update the destination later without reprinting materials. That matters if:

• You change your offer or landing page
• You discover the link needs to be shut down quickly
• You want to rotate destinations seasonally

4) Don’t send people to a bad experience

QR codes don’t fix a weak landing page. Make sure the page is:

• Mobile-optimized
• Fast-loading
• Clear about the next step
• Not overloaded with form fields

If you want conversions, remove friction after the scan as well.

5) Minimize what you ask for immediately

Be cautious about requesting logins, making payments, or sharing sensitive information immediately after a scan, especially in public settings. If it must be done, add a “step zero” page that reassures the user and clearly explains what they’re about to do.

6) Make physical tampering harder

If your QR codes are posted in public:

• Use tamper-evident labels
• Place codes behind acrylic or in frames
• Incorporate branded elements (harder to convincingly replace)
• Assign a simple inspection routine (quick weekly checks)

7) Control who can create or edit QR codes

Treat QR creation like website access:

• Limit permissions
• Use strong passwords and MFA where the codes are managed
• Keep an inventory (where codes are placed, what they point to, and why)

8) Monitor performance for anomalies

Track QR traffic like any other channel. Sudden changes can indicate issues:

• Unusual spikes or strange geographies
• Sharp conversion drops
• Increased customer complaints (“That link looked weird”)

9) Train staff: QR codes are links

Your team should treat QR codes like links in an email. If something looks off, stop and report it. The fastest incidents to contain are the ones caught early.

Bottom line on the QR Code

QR codes are not a marketing cure-all, but they can be a strong tool when they fit the moment: physical placements, real-world experiences, and quick offline-to-online transitions.

The goal is to balance: use QR codes to reduce friction and smart deployment to reduce risk. Or, as Sheri Donahue’s warning makes clear, convenience is valuable, but only when it doesn’t quietly become the pathway to catastrophe.

Need help? That’s what we are here for. Contact TCHQ Communications today at 502-209-7619.