Patent 38 / Contactless Auth & Event Processing
01 / 11 US12107842B2
↑↓ navigate  ·  all patents →
Siten Sanghvi  ·  Granted Oct 1, 2024

Contactless Auth & Event Processing

A contactless processing pipeline in which the user submits identifying or event information that the platform uses to retrieve additional user data, generate an interactive authentication request, and process the event only upon a valid response — all without physical contact with a terminal or device exchange.

US12107842B2Patent
Aug 10, 2023Filed
14 monthsTime to grant
21 Claims / 3 independentScope
0 CitationsForward citations
SCROLL TO EXPLORE
Visual patent explainer
02 / The Problem

Contactless transactions still require physical credential presentation — they're not truly contactless end-to-end.

Contactless payment and access systems typically require the user to present a physical credential (tap a card, show a QR code, hold a device near a reader). The event processing depends on that credential exchange — without it, the transaction cannot begin. For scenarios where the user has no physical credential available, or where the event is triggered remotely, the contactless model breaks down.

Credential DependencyMost contactless systems require a physical tap or scan. If the credential is unavailable (lost card, dead phone), the transaction cannot proceed regardless of the user's identity
No Dynamic AuthStandard contactless processing uses a static credential — there is no mechanism to generate an interactive authentication challenge based on the specific event being requested
Limited Event TypesContactless models are built around payment; they don't generalize to arbitrary event processing (access grants, document releases, approval workflows) that may also benefit from contactless authentication
03 / The Invention

User provides identifying information — platform retrieves context, generates an auth challenge, processes the event on valid response.

The system replaces the static credential presentation with a dynamic pipeline. The user requests event processing and provides user identifying information or event identifying information (not a physical credential). The contactless processing platform receives this, retrieves additional user data based on the identifying information, generates an interactive authentication request tailored to the event and user context, transmits it to the user's computing device, and processes the event only when a valid response is received.

The 21 claims cover the full event lifecycle: request initiation, identifying information submission, platform-side data retrieval, interactive auth request generation and transmission, response collection, and conditional event processing. The interactive auth request is dynamic — generated per-event rather than static for all events.

04 / Architecture

User-submitted info → platform retrieves context → dynamic auth challenge → process on valid response.

The contactless processing platform sits between the user's device and the event processing system. It receives identifying information, enriches it with stored user data, constructs the authentication request, and only releases the event to the processing layer after authentication succeeds. The user's physical credential is not in the loop.

The platform maintains user data stores that are retrieved during the auth generation phase — account standing, preference history, active session flags, and risk signals all feed into both the auth challenge design and the conditional processing decision. A low-risk user at a known location gets a lighter auth challenge; an anomalous session gets a stricter one.

Architecture — US12107842B2
User requests event
+ provides ID info
Platform receives
request
Retrieve additional
user data
Generate interactive
auth request
User responds
to auth challenge
Event processed
on valid response
05 / Identifying Information

The user provides what they know — the platform retrieves what it needs.

The patent distinguishes two types of identifying information: user identifying information (who the user is — name, account number, biometric token) and event identifying information (what the event is — transaction ID, access request code, document reference). Either type can initiate the pipeline. The platform uses the submitted information as a key to retrieve the additional context needed to generate the authentication request.

This lookup model means the user doesn't need to carry or present a full credential — they only need to provide enough identifying information for the platform to locate their record. The full authentication context is assembled server-side, not transmitted by the user device. This eliminates the credential-skimming attack surface present in card-tap systems.

Identifying Information Types — US12107842B2
U
User Identifying Info — Name, account number, biometric token, or device ID that maps to a specific user record in the platform's data store
E
Event Identifying Info — Transaction code, access request ID, or event reference that identifies what the user wants to process
Platform Retrieval — Using the submitted info as a key, the platform retrieves additional user data: account standing, risk profile, authentication preferences, recent activity
Context-Enriched Auth — The retrieved data feeds the interactive auth request generation — making the challenge specific to this user, this event, and this context
06 / Interactive Auth

The authentication challenge is generated per-event — not reused from a static template.

The interactive authentication request is generated dynamically by the platform based on the retrieved user data and the specific event being processed. This means the challenge can vary by event type (payment vs. access grant), by user risk profile (higher-risk users get stronger challenges), and by session context (anomalous sessions get additional factors). The challenge is transmitted to the user's computing device for interaction.

The interactive nature of the challenge distinguishes this from static OTP or biometric checks — the user may need to confirm event-specific details (amount, merchant, location), provide context-specific answers, or complete a multi-step verification flow. The event is only processed after a response that satisfies the generated challenge criteria.

Auth Challenge Types — US12107842B2

Event Confirmation

User is shown event details (amount, recipient, location) and must actively confirm — not just authenticate identity but verify the specific transaction.

Context-Specific Factor

Auth factor selected based on user profile and risk: biometric for high-value events, simple confirmation for low-risk familiar patterns, multi-step for anomalous sessions.

Dynamic Challenge Generation

Challenge content is generated from the retrieved user data — not a static prompt. Questions or confirmation requests are specific to what the platform knows about this user.

Response Validation

Platform evaluates the user's response against the generated challenge criteria. Only a valid response triggers event processing — partial or incorrect responses do not.

07 / Event Processing

The event is processed only after authentication — and the response shapes the processing path.

Successful authentication doesn't just unlock generic event processing — the user's response to the interactive auth request can carry additional information that shapes how the event is processed. A confirmed amount, an approval of specific terms, or a biometric that maps to a specific account tier each influence the downstream processing differently.

The platform communicates the authenticated event to the processing system with the full context of the authentication interaction: what was confirmed, at what assurance level, and what user data was verified. The downstream system receives not just an approval signal but a rich context packet that enables more sophisticated event routing.

Processing Flow — US12107842B2
Valid auth response
received
Response context
extracted
Event + auth context
sent to processor
Event processed
with full auth context
Confirmation returned
to user device
08 / Contactless Scenarios

Any event that can be identified can be processed without a physical credential exchange.

The contactless processing model is event-agnostic — it applies to any event where the user can provide identifying information and can respond to an authentication challenge on their computing device. Payments, access grants, document releases, approval workflows, and enrollment events all fit the model without requiring unique credential infrastructure for each.

The 21 claims' scope covers both user-initiated events (user requests processing of an event they want to complete) and system-initiated events (platform detects a pending event and proactively engages the user). Both paths use the same identifying information → data retrieval → interactive auth → conditional processing pipeline.

Event Types — US12107842B2

Contactless Payment

User initiates payment by providing account identifier. Platform generates payment confirmation challenge. Event processed on response — no card tap required.

Access Grant

User requests facility access with device ID. Platform retrieves access rights, generates identity challenge, grants access on valid response — no physical badge exchange.

Document Release

User requests document with reference ID. Platform verifies authorization, generates confirmation challenge, releases document on response — secure document exchange without in-person credential presentation.

Remote Approval

Platform initiates auth challenge to user device for a pending approval event. User responds from anywhere. Event processed on valid response — no physical proximity required.

09 / Applications

Any event that can be identified can be authenticated and processed without physical credential exchange.

The contactless processing pipeline decouples event authorization from physical credential presentation — enabling a broad class of applications that require strong authentication but cannot rely on physical proximity or credential availability.

Use Cases — US12107842B2
Express
Credential-Free ATM Transaction User approaches ATM, provides account number verbally or via NFC ID. Platform retrieves account, generates interactive auth challenge on user's phone. User confirms on phone. ATM processes withdrawal — no card required.
Express
Remote Event Authorization Platform detects a pending high-value transaction. Generates auth challenge for the specific event details. Transmits to user's device. User responds confirming details. Event processed — no branch visit or physical presence needed.
Inferred
Multi-Factor Contactless Access User provides device ID at secure facility entrance. Platform generates multi-factor challenge (biometric + PIN) on device. Facility access granted on valid response. No badge, RFID card, or physical key required.
Inferred
Dynamic Challenge Escalation Unusual session context triggers an elevated auth challenge (multi-step vs. single-step). Platform adjusts challenge complexity based on real-time risk signals — same event, different authentication rigor based on context.
10 / Citations

0 Forward Citations

No forward citations on record as of June 2026. US12107842B2 was granted in October 2024 — forward citations are expected to begin accumulating as practitioners and examiners reference the contactless event processing claims.

Forward citations confirmed via Google Patents · Jun 2026
Citation Status — US12107842B2
No citations yet — recently granted US12107842B2 granted Oct 1, 2024 Citations typically begin accumulating 12–24 months post-grant
11 / Timeline

Patent Lifecycle

Aug 10, 2023
Filed
Continuation application filed — priority Jul 20, 2020
5 months
Jan 4, 2024
Published
Pre-grant publication US20240007452A1
9 months
Oct 1, 2024
Granted
US12107842B2 granted — 14 months from filing
~19 years
~Aug 2043
Expires
Est. expiration (subject to maintenance fees)
End / Patent 38