Observed
The public file defines a credential-stack workflow, compact carrier form, shielding target, and deliberate present-and-stow access routine.
Shielded credential carrier concept · R&D v0.8
Archived study
RFID Wallet
500D Cordura target · shielding composite study · everyday credential carry
Custom-workshop option · no retail price
Request route This is not a buy-now wallet. A shielded carrier requires a workshop review around the exact card stack, access routine, materials, and finished-build test plan.
Specialty research file // Custom-workshop option
This page documents KTT’s contactless-card shielding study. Shielded credential carry is now treated as an option inside the broader made-to-order pouch workshop and still requires finished-build testing.
StatusArchived specialty study
Best next stepDefine the credential stack and access need
Primary KTT pathTV-D1 and made-to-order pouches
Concept images These images show a research direction, not a finished retail product. Any future credential carrier requires testing with the actual cards and completed enclosure.
Simulation — not measured
Finished-build evidenceNot published
Concept imagery and the illustration below describe a design goal. They do not establish protection, range, or attenuation.
What this page is for
The RFID Wallet is an archived credential-carrier study. RFID means Radio-Frequency Identification: the contactless chip system in some cards, badges, keys, and tags. Use this file to understand the construction problem, then bring the credential count, carry position, closure, and access routine into the Custom Pouch Workshop.
AvailabilityNo standalone release scheduled
Study focusCard and badge shielding
Proof neededFinal card-read testing
ActionRequest custom review
What is known now
Limitation
No finished retail sample or card-read result is published. Card, badge, reader, stack, and environment can change behavior.
Next test
A completed carrier must be checked with the exact credentials and intended readers across repeated closed, opened, and presentation states.
Contactless cards and badges are designed to respond when they are near compatible readers. That convenience is useful, but it also creates a small signal surface that many people never think about until they need more control.
The KTT RFID Wallet is one compact study inside the wider Custom Pouch Workshop: a Cordura exterior, shielding-focused lining, and a deliberate present-and-stow workflow that must be validated with the finished carrier and actual credentials.
RESEARCH QUESTION
The threat model is proximity and convenience. Payment cards, hotel keys, access badges, and transit cards may all behave differently, but the user goal is consistent: keep credentials shielded until they are intentionally used.
// RFID Read Test // Radio-Frequency Identification //
Reader range simulation
Simulation — not measured
NFC
EMV
RFID
Badge
Technical record Development status, archive route, and shielding targets
// DEVELOPMENT PHASE
ResearchARCHIVED
MaterialsDESIGN TARGETS
Finished sampleNOT PUBLISHED
Measured resultsNOT PUBLISHED
ReleaseUNSCHEDULED
[ STATUS: ARCHIVED RESEARCH // NO STANDALONE LAUNCH ]
This file remains public because the credential-carry problem is useful. For a real project, bring the card stack, access routine, carry position, and validation requirement to the Custom Pouch Workshop.
SHIELDING_TARGETS
- Faraday composite inner lining
- 13.56 MHz RFID attenuation target
- NFC / EMV contactless attenuation target
- Low-frequency RFID behavior to be measured
MATERIAL_TARGETS
- 500D Cordura exterior target
- Multi-layer metallic mesh lining
- Elastic card retention band
- Compact profile target; capacity requires a fit check
OPERATIONAL_NOTES
- Target: present cards deliberately for reading
- Passive lining target; no battery in the concept
- Fit must be checked with the actual card stack
- Seam and moisture behavior remain untested
NOT_ESTABLISHED
- No published card-read blocking result
- No verified protection against cloning
- No key-fob relay protection claim
- No security guarantee from this concept
Visual build brief Card stack, shield sleeve, and present-and-stow workflow
Visual build brief
Define a deliberate present-and-stow workflow.
The proposed workflow is simple: separate the credential you want to present, use it, then return it to the carrier. The lining and closed-carrier behavior still require testing.
- The proposed sleeve holds the card stack.
- One card comes out when the user chooses.
- Badge and wallet behavior should be tested separately.
- Test each card and badge with the finished carrier before relying on it.
What do your cards need to survive?
Choose a daily carry problem and the wallet recommendation updates with use notes.
Recommended configuration
