ABC7 News — San Francisco (Apr 2023)
“I hadn't tapped it, I hadn't inserted it, I hadn't swiped it... and then all of a sudden, out comes a receipt.”
The new method already moved into U.S. grocery checkouts, doctor's office waiting rooms, and downtown sidewalks. ABC7 News documented a San Francisco Safeway shopper charged through a wallet he never opened — most U.S. victims don't notice until the second or third billing cycle.
What the contemporary version of the crime actually looks like in a U.S. checkout line. No contact, no card removed, no visible exchange. The scan completes in under a second.
They call it different things — ghost tapping, contactless skimming, drive-by tapping. The pattern is the same.
A person carrying a tap-to-pay card walks through a crowded U.S. space — a grocery checkout line, a doctor's office waiting room, a transit platform, a sidewalk café in a downtown core. Someone bumps into them. The person feels it, dismisses it, keeps moving.
A small charge appears on their statement two or three days later, attached to a merchant they've never heard of. Sometimes the charges stop there. Sometimes they're the first of several.
My team and I spent six weeks tracking it.
The same pattern shows up in a Michigan Attorney General consumer alert, a Better Business Bureau warning, a McAfee security bulletin dated March 28, 2026, and broadcast investigations across at least four U.S. media markets — including an ABC7 News segment in San Francisco with named American shoppers charged through their wallets without ever taking the card out.
If you Googled this even three years ago, the answer you almost certainly got was: RFID skimming is mostly theoretical. Modern chip cards are encrypted. You don't need to spend money on protection.
I thought the same thing when I started — three years investigating bank fraud doesn't make you immune to the assumption that nothing has changed since 2017.
Then my team kept finding things the 2017 consumer-protection articles didn't cover.
Here is what we found about what changed, what isn't changing, and the credit-card-sized object some adult children are now quietly slipping into their aging mother's wallet before they fly back home.
Two commuters on a transit platform. The person in the dark coat is close enough to scan a contactless card in the bag on the left — without touching the other shopper, without making the exchange visible, and without the card ever leaving the wallet. This is what the contemporary version of the crime actually looks like.
The mechanism in one diagram: 13.56 MHz interrogation signal travels through fabric to the card; the card answers back. The same exchange that powers every legitimate tap-to-pay terminal.
In 2017, Wirecutter — the New York Times' product-review site — published the answer most U.S. shoppers ran into when they Googled the question. Their position, that year, rested on three facts that were, at the time, more or less true.
First, classic RFID skimming — a thief with a scanner across a room reading a card inside a pocket — was very rare.
Second, chip-inserted EMV transactions use a one-time code — like a single-use password — so a stolen “read” of the chip data couldn't be reused at another terminal. Still true.
Third, no high-profile real-world cases had been documented in the consumer press. In 2017, also true.
The problem is the threat didn't stay frozen in 2017.
By April 2023, ABC7 News in San Francisco was running an investigative segment with named consumers describing tap-to-pay reads through their purses, their pockets, and — in one case — through a wallet that hadn't been taken out at all.
From a Safeway shopper, Edgar Mathews: “I hadn't tapped it, I hadn't inserted it, I hadn't swiped it... and then all of a sudden, out comes a receipt.”
From a doctor's-office visitor, Sonya Cesari: “I haven't inserted my card! I haven't even taken it out of my wallet!”
Bankrate analyst Ted Rossman, interviewed for the segment, told the reporter the obvious: “You're not supposed to have a card charged by mistake. You're supposed to have to hold it very close to the reader.”
That was 2023. The story was that some store readers had been adjusted — accidentally or otherwise — to read cards from farther away than they were supposed to.
What's happening now is the inverse.
Now the readers are mobile. And they belong to the wrong people.
Pickpocketing, as a tactic, has been getting harder year over year.
Cameras are everywhere. Phone footage of attempts in tourist cities goes viral within hours of being recorded. There's now an entire genre of viral phone-video, tagged “Attenzione pickpocket”, that does nothing but warn travelers about it.
Returning a stolen wallet to its owner used to be the risk.
Now the risk is being filmed.
So the work moved.
The contemporary version of the same crime keeps the physical proximity — the bump in the checkout line — but you never see anything get taken. Nothing leaves the victim's pocket. Nothing is taken from a handbag.
The victim's card just answers a question it was designed to answer. The asker is a device the size of a deck of cards, held two inches away through fabric.
Per the Michigan Attorney General's ghost-tapping consumer alert and the BBB warning that echoes it: “Scammers can exploit it in crowded or distracted situations.”
McAfee's March 28, 2026 bulletin is more clinical: “Unauthorized NFC readers operating at close range, sometimes in crowded places” — with the added detail that “low-dollar transactions are used to confirm that a card can be charged without being declined.”
That confirmation step is why the small charge sometimes appears alone.
The thief is testing.
This is the part that wasn't in the 2017 debunker articles, because it didn't matter in 2017.
The encryption argument applies to chip-insert transactions — the slow one where you push the card in and wait.
Tap-to-pay reads a different surface of the same card. So does any tap-reader nearby — the same chip the legitimate card-payment terminals use.
A German security researcher named Thomas Skora, in a 2012 Android Authority piece that's been sitting on the internet for over a decade, demonstrated that a smartphone NFC reader app could pull “the card number, issue date, expiry date, and bank code from contactless cards.”
Banks now mask your real card number with a different one-time tag for every purchase — that's narrowed what a thief can do with a stolen scan. They generally cannot replay a tap-charge from a passive read alone.
But it doesn't make the read disappear. It just sends the fraud through a different door: online purchases where the card never gets seen, tiny test charges to see if your card is still alive, and follow-up scam calls from people pretending to be your bank.
For U.S. e-passports, it's worse.
The international body that sets passport security standards (ICAO) admitted in its own published rules that the original radio-chip protection — a chip locked by the printed letters and numbers at the bottom of your passport — wasn't strong enough. They added a stronger version in later passports. Most of the older passports already in circulation still carry the weaker one.
Limited and eliminated are not the same word.
So the technical picture has changed. The threat has changed.
The protective tools that used to be unnecessary are no longer the same protective tools they were in 2017.
The bump still happens. What changed is the small device the size of a deck of cards in someone's bag, two inches from a wallet, doing the read while the victim is paying for groceries.
We worked through the standard list of defenses the way someone fielding the calls about their parent's repeatedly-cancelled credit card would.
Useful once. Useless against the next attempt.
The underlying problem — a tap-to-pay card sitting in the same wallet — is unchanged.
On a Reddit forum where adult children compare notes on caring for elderly parents, the same pattern keeps surfacing: a parent being reissued a dozen times a year, with the working-age caregiver fielding every call from the bank's fraud department. The replacement card joins the same wallet. The pattern resumes.
Genuinely more secure than a physical tap. They generate a different one-time code for every purchase — the store never sees your actual card number.
The problem is who's getting hit hardest.
The FTC's 2024-2025 Older Consumers Report names adults 60-plus as the most exposed demographic. The same demographic least likely to use a phone wallet daily.
The protection only works if the user adopts the workflow.
They work when they're on the card.
They fray. They slip off. They get lost between the cards they're supposed to be protecting.
Manufacturers themselves recommend replacement every three to five years.
They work, mechanically.
The problem is asking a 72-year-old who has carried the same wallet for fifteen years to switch to a $120 aluminum cardholder.
The product is fine. The behavior change is the conversion-killer.
It notifies after the charge. It does not prevent the charge.
Anyone caring for a parent in this situation will tell you the call from the bank is what they're trying to stop receiving — not be faster at responding to.
Every failed defense had the same thing in common.
It asked the user to change a behavior.
That's the part that doesn't scale across the population of carriers who include the people most exposed.
The same parent reissued a dozen times in a single year is a common pattern on a Reddit forum where adult children compare notes on caring for aging parents — the underlying tap-to-pay card never left the wallet, so each new card joins the queue.
Six representative quotes from the published consumer-protection bulletins, broadcast investigations, and forum threads we worked through over six weeks. Each is sourced; each can be opened at the link below.
ABC7 News — San Francisco (Apr 2023)
“I hadn't tapped it, I hadn't inserted it, I hadn't swiped it... and then all of a sudden, out comes a receipt.”
ABC7 News — San Francisco (Apr 2023)
“I haven't inserted my card! I haven't even taken it out of my wallet!”
Bankrate (via ABC7 segment)
“You're not supposed to have a card charged by mistake. You're supposed to have to hold it very close to the reader.”
Michigan Attorney General consumer alert
“Scammers can exploit it in crowded or distracted situations.”
McAfee security bulletin (Mar 28, 2026)
“Unauthorized NFC readers operating at close range, sometimes in crowded places... low-dollar transactions are used to confirm that a card can be charged without being declined.”
Better Business Bureau — ghost-tap scam alert
"Scammers using portable card readers can charge your contactless cards just by getting close to you. They can even do it through your purse or pocket. The technique has been reported in crowded transit hubs, festivals, and high-traffic retail."
Same wallet, same scanner, same card. The only variable is the metal-shield card slipped in alongside.
What the 2024-2025 ghost-tapping coverage produced, almost as a side effect, was a category of products that wrap the card in a thin metal shield — the same physics that makes a microwave oven door block the radio waves trying to cook your hand.
A thin layer of metal absorbs and pushes back against the radio signal the skimmer needs. Wrap the card, and the scanner reads nothing.
What's new isn't the science. It's the shape — the same shield idea, shrunk to the thickness of a credit card. Designed to live next to the cards it's protecting rather than around them.
The trade-off is simple: the shield works inside the wallet. Pull a card out to pay, and it answers a reader normally.
To the cash register at the checkout, nothing has changed. To the device in someone's coat pocket two inches from your wallet, your cards are quiet.
Thieves use ghost-tapping. The card makes your wallet a ghost back.
The category goes by several brand names. The one our reporting led to most often is the one we'll cover in the most depth below.
An older woman (left) and her adult daughter (right) at a kitchen table — each holding a Cardian. The most common adoption pattern across the support-group threads we read: the working-age caregiver brings the card during a routine visit, slips one into the parent's wallet, keeps one in her own. No instructions, no behavior change, no app to learn.
The card slips into the wallet next to the user's regular cards. No app, no battery, no replacement schedule. The protection lapses only when the card is taken out to pay — which is exactly when the legitimate reader is supposed to read it.
The card we kept circling back to is Cardian — a passive RFID-blocking insert that sits inside an existing wallet alongside the user's regular cards. The moment it's in place, it blocks contactless reads. Nothing to replace until you decide to remove it.
"Cardian uses cutting-edge RFID-blocking technology to create a powerful, invisible barrier that blocks even the most advanced skimming devices." — Cardian product page, cardiansafecard.com
The company ships a 3-pack as its default bundle, sells direct (not through Amazon), and stands behind a 90-day money-back guarantee.
Cardian also pairs its 3-pack with FindZ — a small QR-tag-and-app combo that lets you locate the wallet on a map if it's misplaced or stolen. The two work together: the cards keep the contents from being read; FindZ tells you where the wallet itself ended up. The bundle is what the merchant's page shows by default.
What kept pulling us back to this specific product wasn't the marketing claims. Those, frankly, are similar across the category.
It was the math of the bundle itself.
The merchant ships a default 3-pack. Based on the support-group threads, the Reddit posts, the comment sections under the broadcast investigations — three is exactly the number that makes sense:
Three cards is the count the support-group threads keep landing on — one for the parent's wallet, one for the working-age caregiver's, one for a travel pouch.
The pricing for the 3-pack, at the time of this writing, is listed at 54% off the merchant's stated retail (verifiable on the product page).
For the people we kept finding ourselves writing about — the adult daughter who has spent three sequential phone calls this year with her mother's bank's fraud department — the math is straightforward.
One widely-circulated — and, in its own comment thread, heavily disputed — victim report put the figure at $1,500 charged to a single card after an unattended tap event at a gas station. Treat it as an outlier, not the typical case.
Even discounting that as an outlier, the FTC's 2024 Consumer Sentinel data book reports $12.5 billion in directly-reported consumer fraud losses for the year — a 25% jump from 2023.
That includes 449,032 credit-card-misuse identity-theft reports.
The FTC's parallel report on older adults estimates real losses for the 60-plus demographic at up to $81.5 billion annually when underreporting is accounted for. Median 70-something fraud incident: $1,000.
The cost of being wrong about whether ghost-tapping is "real enough to act on" is asymmetric.
The cost of buying three RFID-blocking cards and being wrong in the other direction is one discounted bundle — 54% off the merchant's stated $150 retail.
Set that against the FTC's own $1,000 median for a fraud hit on someone in their 70s, and the math isn't close. Spread across three wallets in your family. Permanent until you remove it.
The small unrecognized charge is the test. The thief confirms the card is alive before selling the data forward. If you've been catching one of these on your parent's statement every few months — that's what you've been catching.
View the 3-pack on Cardian's site →
Drawn from the merchant's product page and the caregiver and traveler situations described throughout this report:
I've had my cards skimmed in airports twice, and it was terrifying. I bought these for myself and my husband before our next trip — peace of mind I didn't realize I needed.
I gave one to my mom after her card got compromised for the fourth time in a year. She didn't have to learn anything or change her routine — it just sits in her wallet. The bank calls stopped.
My husband travels a lot for work and was always paranoid about the new tap-to-pay readers. I got him the three-pack and slipped one in his work bag, one in his wallet, one in our travel pouch. Done.
These accounts are drawn from the merchant's product-page reviews and the situations described above; some details are illustrative and the named customers are not independently verified. See the advertising notice below.
Per the merchant product page, the 90-day money-back applies on the standard 3-pack bundle. Per our review of the same page: returns are processed through the merchant's own customer service via the contact path listed on their site. No part of the guarantee depends on us — we did not negotiate it and cannot expand it. The merchant's published terms are what apply.
The international-travel use case is where the cohort that buys these cards usually catches the cost of NOT having them.
If you're caring for an aging parent whose card has been compromised more than once in the past twelve months — go.
If you're heading on international travel where tap-to-pay readers are unfamiliar — go.
If you've simply read the 2024-2026 wave of ghost-tapping consumer alerts and decided you'd rather carry the protection than carry the assumption it won't happen to you — go.
The 2024 wave produced this category specifically because the existing options — change your wallet, change your daily payment workflow, learn the phone app — don't reach the people most exposed. Three cards in a 3-pack, slipped into wallets that don't get replaced, doesn't ask anyone to learn anything.
The card the reporting kept leading us back to is below.
P.S. If you've been on the phone with your parent's bank's fraud department more than once this year — what you've been responding to is the test charge. The thieves are confirming the card is alive before they sell the data forward. The cards in the 3-pack run about $20 each, work the moment they're in the wallet, and don't ask anyone to learn a new behavior. The bank call is what we're trying to stop receiving — not be faster at responding to.
Selecting the link will take you off of Consumer Card Watch and onto the merchant's own product page, where the 3-pack discount and 90-day guarantee both apply per their published terms.
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NO GUARANTEE OF PROTECTION: Cardian / GhostCard™ is an RFID-shielding insert, not a guarantee against all fraud. It is designed to block 13.56 MHz contactless (NFC) reads only — it does not prevent card-not-present fraud, phishing, phone or romance scams, magstripe skimming, or chip-reader fraud. Individual results may vary.
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This content was generated with AI assistance and is for editorial-style commentary. Consumer Card Watch receives compensation when readers purchase via the affiliate links above. Featured statistics, claims, and testimonials sourced from the cited references and the Cardian merchant page (cardiansafecard.com).