How Safe Are Your Cards When You Travel In The US? (From Airport Kerb To Hotel Room Door)
- Alpine Rivers® founder
- Sep 1, 2025
- 7 min read
Updated: May 24
Why US travel needs its own card-safety guide
Most travel security advice treats every trip the same. It is not. US travel has its own shape. Cards in the US are almost all contactless. Airports are TSA-screened. Transit cards are 13.56 MHz across most major cities (Clipper in San Francisco, SmarTrip in DC, MetroCard's contactless successor in New York, CharlieCard in Boston). Hotels overwhelmingly use 13.56 MHz keycards. Drive-throughs, self-checkouts, and tap-to-pay vending machines are everywhere.
That density of contactless infrastructure is convenient, and it also means a US traveler's wallet is "broadcasting" at almost every step. This article walks through a typical US travel day from kerbside drop-off to hotel room door, points at the moments where the broadcast can be picked up, and shows what a FIPS 201-listed RFID Blocking Sleeve does at each step.
The bigger pattern of where skimming actually happens, anywhere in the world, is in Where Does RFID Skimming Actually Happen?. This piece zooms in on the US specifically.
What is in a US traveler's wallet right now?
A typical US traveler today carries:
One or two tap-to-pay credit or debit cards (Visa, Mastercard, Discover, or Amex — almost all contactless since 2018)
A US passport book or passport card (US passport books issued after October 2006 contain a 13.56 MHz contactless chip storing name, date of birth, photo, and document number)
A driver's license (some state IDs have embedded contactless chips, most do not)
A transit card for the city visited (Clipper, SmarTrip, MetroCard contactless, CharlieCard, etc.)
A hotel keycard for the current stay
A work badge, gym tag, or building access card
That is six to nine 13.56 MHz devices in a single wallet or pouch. Each one is a potential read target.
The day, beat by beat
A typical US travel day, starting at 4 AM kerbside drop-off and ending at 11 PM hotel room door. Each beat marks what is happening to your cards.
Kerbside drop-off (04:30)
You step out of the taxi. Your wallet is in your jacket pocket. The driver hands your bag to a porter, you hand cash to the driver, the porter walks your bag to the curb. Three strangers within four inches of you in under thirty seconds.
What is happening | Sleeve status |
Check-in counter (05:00)
You approach the airline counter with passport in hand. You hand over the passport. The agent scans it. The whole exchange takes two minutes.
What is happening | Sleeve status |
Other cards in your wallet behind you at the counter, queue density behind | Sleeves keep wallet cards silent |
Security queue (05:30)
You join the TSA line. Wallet often goes into a bin with your phone, keys, and watch. Queue density is high. Strangers within feet on every side.
What is happening | Sleeve status |
You walk through the body scanner | Cards in the bin do not respond to the body scanner (it operates at millimetre-wave, not 13.56 MHz) |
Wallet collected on the other side | Pick up, drop into pocket, continue |
Coffee at the gate (06:30)
You approach a coffee counter, take out your wallet, slide a card out of the sleeve, tap, slide the card back into the sleeve.
What is happening | Sleeve status |
Card returned to sleeve | Silent again |
Wallet sitting open on the counter while you wait for coffee | Sleeved cards inside stay silent |
Boarding (07:30)
You scan the boarding pass on your phone. Your passport is checked. The card you used for the seat upgrade is not needed.
What is happening | Sleeve status |
Passport back in sleeve and into the neck wallet rear pocket | Silent again |
On the plane (08:00 - 13:00)
Cards in your jacket pocket or stashed in the seat-back pocket. You sleep, read, work.
What is happening | Sleeve status |
Layover, paid wifi or food (13:30)
You buy a snack with a tap-to-pay terminal at a kiosk. Same pattern as the coffee.
What is happening | Sleeve status |
Arrival, customs (15:00)
Passport scanned at US Customs and Border Protection (returning), or shown to an officer (departing). Cards in your wallet, neck wallet, or money belt are not touched.
What is happening | Sleeve status |
Ride from the airport (15:30)
Uber, Lyft, taxi, or train. Most travelers take a ride-share. Wallet in pocket, phone in hand.
What is happening | Sleeve status |
Hotel check-in (17:00)
You arrive at the hotel, hand the front-desk agent your passport, your reservation confirmation, and the credit card on file. The agent makes a copy of the passport and runs an authorization on the card. You receive a hotel keycard.
What is happening | Sleeve status |
Card returned to sleeve | Silent |
Hotel keycard issued, lives in the neck wallet or pouch | Hotel keycard does not need to be sleeved during the active stay (you use it constantly) |
Dinner out (19:00)
You leave the hotel, walk to a restaurant, sit, eat, pay.
What is happening | Sleeve status |
Card out for the bill, tap, returned | Standard pattern |
Walk back through a busy district (21:30)
City sidewalks at evening, crowd density variable.
What is happening | Sleeve status |
Hotel room door (22:00)
You return to the hotel, tap the keycard at the door, enter the room.
What is happening | Sleeve status |
All other cards in the wallet | Sleeved and silent |
What goes wrong without sleeves?
The pattern in the table is that the sleeve is doing background work the whole day. The card is exposed only at the moment of tapping. Every other moment (the queue, the bin, the table, the desk, the walk), the card is silent.
Without sleeves, the card is broadcasting at every one of those moments. Every reader nearby that operates on 13.56 MHz can pick up the card, including hostile readers configured to log instead of process. The risk is not that every read is a theft. The risk is that the card data is sitting on a stranger's hardware afterwards.
The attack is silent. The card does not buzz. The phone does not warn you. The first sign anything happened is on your statement, often weeks later.
Where the US is different from the rest of the world
A few small differences that matter:
US contactless adoption is recent. Tap-to-pay only became standard at US merchants around 2018-2020. That means the US has a younger, larger volume of contactless cards in circulation than markets that adopted earlier. Travelers with older cards (chip-and-PIN only, no contactless) face less risk on those specific cards.
US passport books carry a contactless chip; passport cards have a different (vicinity) chip. Both should be sleeved when not in active use. Passport sleeves are sized for ID-3 passport books; the passport card uses a card sleeve.
TSA security is consistent. TSA approves combination locks (the Alpine Rivers® Ultra-Flex and Ultra-Tuff models) which lets TSA inspect a bag without cutting the lock.
Hotel keycards are almost universally 13.56 MHz. The keycard itself is low-stakes (an attacker would have to skim it and visit your specific hotel within hours to use it), but it lives next to your other cards and benefits from the sleeve.
Frequently asked questions
Should I sleeve my US passport book?
Yes. The chip stores your name, date of birth, photo, and document number. The book is also the highest-value document in your wallet for identity theft. Passport sleeves are sized for the current US passport including the 52-page version.
What about my driver's license?
Most US driver's licenses do not have a contactless chip. A few state Enhanced Driver's Licenses do (Washington, Michigan, New York, Vermont, Minnesota as of 2026). If you carry an EDL, sleeve it.
Are tap-to-pay payments at US merchants safe themselves?
The legitimate transaction at the terminal is safe (the terminal uses cryptographic tokens that expire in seconds). The risk is from hostile readers near the wallet at moments when you are not tapping.
Do TSA agents need me to remove a sleeve from a card during screening?
No. Sleeves do not show up as anomalies in the X-ray (they read as thin paper laminate). You do not need to remove cards from sleeves before passing through security. The exception is if TSA asks you to present a specific card or passport, in which case you slide it out as you would at any counter.
Does the airline read my passport through a sleeve?
No. The airline agent will hold the passport open to the photo page and scan it. The sleeve has to be off for the read.
Do I need a money belt or neck wallet for US travel?
Optional but useful for multi-day trips. A money belt or neck wallet centralizes documents and adds three-layer shielding to a hidden or visible body-carry. Both ship with bonus FIPS 201-listed sleeves so the same shielding follows your cards into a pocket or hand. The breakdown is in Travel Wallet vs Neck Wallet vs Money Belt: Which One Belongs On Your Body On Which Day?.
Where can I verify the FIPS 201 listing?
Search the GSA Approved Products List for FIPS 201 Shielding Sleeves. Alpine Rivers® is listed under GSA APL #1424 with the 2016 approval date.
What the Alpine Rivers® range looks like today
Layer | Product | Best for |
Hidden body carry | High-value items, multi-day trips | |
Visible body carry | Daily-access items, sightseeing days | |
Bag-level protection | Checked baggage, hotel safes |
Every production run, every variant, goes through independent batch inspection. That has been true since 2015 and it has never stopped.
If you have a US travel question this article did not cover, contact us at info@alpine-rivers.com. We answer every message.
About the author
This post is by the founder of Alpine Rivers®. The brand was founded in 2015, designed in Houston, Texas, and headquartered in London. Alpine Rivers® operates the official Alpine Rivers® Brand Store on Amazon with over 19,000 verified reviews across the product range at 4.7 stars. The founder writes about RFID shielding, travel-grade product engineering, and the gap between marketing claims and independent testing.
Alpine Rivers® and the Alpine Rivers® logo are registered trademarks of Alpine Rivers® (USPTO Reg. 5,122,373 and 6,325,028). PolyShield™ and Security Beyond Travel™ are trademarks of Alpine Rivers®.
California residents: see our Proposition 65 Warning.
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