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EforLink UWB Seamless Access Solution

From active identity verification to automatic recognition upon approach, creating a new seamless access experience.
EforLink UWB seamless access solution using smartphone-based UWB ranging for automatic recognition and hands-free entry

Application Overview

Technical Comparison

CORE FEATURES

KEY ADVANTAGES

COMPATIBLE HARDWARE

Application Overview

The EforLink UWB Seamless Access Solution combines UWB ranging, smartphone identity association, access permissions, and entrance-device integration to support automatic recognition when an authorized user approaches.

Instead of requiring a card swipe, QR scan, or NFC tap, the UWB system uses distance-aware interaction as part of the acess workflow.

A registered compatible smartphone acts as the user-side UWB device. When the user enters the configured sensing area, UWB ranging provides spatial context, the access controller checks the associated identity and permissions, and the connected entrance device responds according to the configured access rule.

UWB seamless access identity binding and authorization for a registered smartphone user

Identity Binding & Authorization

Authorized smartphone user approaching a UWB seamless access turnstile

User Approaches

UWB ranging and identity recognition detecting an authorized smartphone near an access point

UWB Ranging & Identity Recognition

Access control system verifying user identity and permissions for UWB seamless access

Access Control System Authorization

Turnstile opening automatically after UWB identity and permission verification

Door or Turnstile Opens

Authorized user passing through a turnstile with smartphone-based UWB seamless access

User Passes Through

The solution is built on UWB technology for accurate ranging and stable proximity triggering. UWB ranging itself does not determine authorization: identity binding, permission verification, controller logic, and entrance-device integration remain part of the complete UWB system.

Typical deployments can integrate turnstiles, automatic barrier gates, doors, locks, or other supported access endpoints. Actual trigger distance and deployment behavior depend on site geometry, device compatibility, application configuration, and access-control integration.

Technical Comparison

Technical Comparison

Comparison

Facial Recognition

场景痛点

Access Card

Bluetooth Beacon RSSI

Fingerprint

Bluetooth AOA

UWB Seamless Access

UWB
Recognition Method
Key Points Key Points
  • Facial image recognition
Key Points Key Points
  • Physical card reading
Key Points Key Points
  • Fingerprint recognition
Key Points Key Points
  • ✓ Centimeter-level UWB ranging and automatic identity recognition
Recognition Speed
Key Points Key Points
  • Typically 1–2 seconds per person
Key Points Key Points
  • Typically around 1 second per person
Key Points Key Points
  • Typically 1–2 seconds per person
Key Points Key Points
  • ✓ Millisecond-level recognition while the user is moving
Concurrent Recognition
Key Points Key Points
  • Typically 3–5 faces in the reference comparison
Key Points Key Points
  • One card read at a time
Key Points Key Points
  • One fingerprint read at a time
Key Points Key Points
  • ✓ Up to 20 tags concurrently; capacity depends on configuration
Recognition Range
Key Points Key Points
  • Horizontal range: 0.1–1.2 m
Key Points Key Points
  • Within 1 cm of the card reader
Key Points Key Points
  • Direct contact with the fingerprint reader
Key Points Key Points
  • ✓ Omnidirectional sensing; configurable recognition distance within the specified 0–20 m range
Privacy Protection
Key Points Key Points
  • Requires facial biometric data collection
Key Points Key Points
  • Records card ID only
Key Points Key Points
  • Requires fingerprint biometric data collection
Key Points Key Points
  • ✓ No facial or fingerprint biometric information is required
Recognition Performance
Key Points Key Points
  • May be affected by face coverings, viewing angle, and lighting
Key Points Key Points
  • Depends on card and reader condition
Key Points Key Points
  • May be affected by wet, peeling, or dirty fingers
Key Points Key Points
  • ✓ Centimeter-level UWB time-of-flight ranging supports precise proximity detection
Anti-Spoofing
Key Points Key Points
  • Spoofing resistance depends on liveness detection and implementation
Key Points Key Points
  • Cloning resistance depends on card technology and implementation
Key Points Key Points
  • Spoofing resistance depends on sensor and liveness detection
Key Points Key Points
  • ✓ Scrambled Timestamp Sequence (STS) supports secure ranging and helps resist ranging manipulation
Environmental Adaptability
Key Points Key Points
  • Sensitive to lighting conditions
Key Points Key Points
  • Stable operation
Key Points Key Points
  • Affected by finger condition
Key Points Key Points
  • ✓ Ranging does not rely on lighting or camera viewing angle; performance depends on installation and operating conditions

User Experience Comparison

Comparison

Facial Recognition

场景痛点

Access Card

Bluetooth Beacon RSSI

Fingerprint

Bluetooth AOA

UWB Seamless Access

UWB
Access Process
Key PointsKey Points
  • Stop → adjust posture → facial recognition → wait for result → gate opens → resume walking
Key PointsKey Points
  • Stop → take out card → present card → wait for verification → gate opens → pass
Key PointsKey Points
  • Stop → press finger → wait for verification → gate opens → pass
Key PointsKey Points
  • ✓ No stopping and no additional action required; pass through directly
Manual Verification Actions
Key PointsKey Points
  • Stop and align with the camera
Key PointsKey Points
  • Take out and present a card
Key PointsKey Points
  • Place a finger on the reader
Key PointsKey Points
  • ✓ No manual verification action during passage after setup and authorization
User Experience
Key PointsKey Points
  • Requires cooperation with the recognition posture
Key PointsKey Points
  • Requires carrying a physical card
Key PointsKey Points
  • Requires active operation and may be affected by hand condition
Key PointsKey Points
  • ✓ Seamless access without changing the user's normal walking behavior
User Adaptability
Key PointsKey Points
  • Less suitable for some users who cannot easily cooperate with facial recognition
Key PointsKey Points
  • Less convenient for some users with hand impairments or wheelchair users
Key PointsKey Points
  • Less suitable for users with hand impairments or worn fingerprints
Key PointsKey Points
  • ✓ A compatible smartphone or supported UWB tag provides the credential; recognition requires no additional gesture

*The comparison describes typical access methods. Performance varies by device, configuration, and operating conditions. Recognition speed refers to the recognition stage, not the total time required for authorization, gate opening, or passage.

CORE FEATURES

photo-networkCentimeter-Level Spatial Awareness
photo-networkAutomatic Identity Recognition
photo-networkSecure Identity & Privacy Protection
photo-networkStable & Reliable Operation
photo-networkFlexible Integration & Retrofit Deployment

Centimeter-Level Spatial AwarenessUWB ranging for precise approach detection and automatic recognition in a smartphone-based seamless access system

Based on UWB time-of-flight (ToF) ranging, the solution provides centimeter-level distance measurement for precise proximity detection.
The UWB Recognition Module supports:
• Omnidirectional spatial recognition
• Adjustable recognition distance from 0 to 20 m
• Concurrent recognition of up to 20 tags
The sensing distance can be configured for the access area. Actual sensing performance and concurrent capacity depend on deployment conditions and configuration; the tag capacity does not specify simultaneous smartphone capacity.

Automatic Identity Recognition UWB device identity binding connecting authorized smartphone credentials with seamless access control workflows

When an authorized user approaches the preset sensing area, the UWB Recognition Module detects the user's spatial position and identity information.
Once the preset trigger conditions are met, identity information is sent to the existing access control system for authorization.
No additional user action is required during the recognition process.
 

Secure Identity & Privacy Protection Configurable UWB system access trigger combining distance, identity, and permission verification for automatic entry

The solution uses a unique ID for user recognition and does not require the collection of facial, fingerprint, or other biometric information.
Encrypted communication helps protect exchanged information.
Scrambled Timestamp Sequence (STS) supports secure UWB ranging and helps resist manipulation of ranging signals. The access control system remains responsible for verifying access permissions.
 

Stable & Reliable Operation UWB applications integrating smartphones, SDK, access controllers, turnstiles, smart locks, and third-party entrance equipment

Centimeter-level UWB ranging provides accurate spatial sensing with high concurrency and strong interference resistance.
The solution is less affected by external environmental conditions and supports:
• Ranging that does not rely on lighting or camera viewing angle
• Offline operation in supported configurations
• Integration across different access environments
 

Flexible Integration & Retrofit Deployment UWB system supporting local credential verification and offline access through configured controller logic without continuous cloud communication

The UWB Recognition Module provides multiple hardware interfaces for integration with existing access control infrastructure.
It supports:
• Wiegand input and output
• RS485 communication
• RS232 communication
• NO / COM / NC switch interfaces
• Third-party turnstile and access control device integration
• A smartphone SDK for custom app development
The solution supports retrofit integration with compatible access control systems, retaining the existing access control platform and devices.
The UWB Recognition Module provides identity-trigger information, while the existing access control system continues to complete identity authorization and control the access device.
 

KEY ADVANTAGES

01

Seamless User Experience

UWB ranging enables distance-aware interaction so authorized users can approach and pass through supported entrances without presenting a card, scanning a QR code, or tapping NFC.
UWB seamless access allowing an authorized user to pass through a turnstile with a smartphone kept in a pocket
01

Precise & Stable Triggering

UWB technology provides fine-grained distance measurement for configured trigger zones.
The UWB system combines this ranging input with identity and authorization logic to support stable access behavior.
UWB ranging supporting precise and stable proximity triggering for seamless access
01

Flexible Integration

The solution supports UWB applications across turnstiles, automatic barrier gates, doors, locks, and compatible third-party access equipment.
Integration depends on the supported interface and project configuration.
UWB applications integrated with turnstiles, barrier gates, doors, locks, and third-party access equipment
01

Reusable Spatial Interaction Layer

The same UWB technology foundation can support additional proximity-based interaction scenarios where supported devices, permissions, and connected equipment are properly integrated.
UWB technology providing a reusable spatial interaction layer for seamless access and proximity-based interactions

COMPATIBLE HARDWARE

Ecosystem Support

  • Apple Ecosystem

    eforthink UWB Indoor Wall-Mounted Positioning Base Station

Supported Models

Selected UWB-equipped models in the iPhone 12–17 series

Ecosystem Advantages

• Large installed user base

• Mature UWB capabilities

• Consistent interaction experience

Support Notes

iPhone SE models and other models without UWB hardware are not supported. Compatibility depends on the specific phone model, iOS version, app, and deployed accessory configuration. Complete the required permissions and pairing before use.

 

  • Android Ecosystem

    eforthink UWB Indoor Ceiling Mounted Positioning Base Station

Representative Smartphones

• Selected UWB-equipped Xiaomi models

• Selected UWB-equipped Samsung Galaxy models

Ecosystem Trend

UWB availability varies by model. Solution compatibility also depends on the Android version and app integration; a brand name alone does not indicate support.

 

UWB Recognition Module

The UWB Recognition Module is the core hardware component of the Eforthink UWB Seamless Access Solution.

It combines UWB high-precision ranging and identity recognition to detect authorized users within the configured access area and send identity-trigger information to the existing access control system.

With multiple hardware and communication interfaces, the module supports flexible integration with existing access control systems, turnstiles, and other access devices.

Product Specifications

Item

Specification

Module Dimensions

71.5 mm × 73.5 mm × 11 mm

Power Supply

DC power supply, 9–24 V wide voltage input

Wiegand Interface

Wiegand Input: Data0 / Data1; Wiegand Output: Data0 / Data1

Communication Interface

RS485, RS232

Switch Interface

NO normally open contact / COM common terminal / NC normally closed contact

Power Indicator

Stays on after power-up; flashes when the button is pressed

Signal Indicator – Red

Red light flashes during ranging

Signal Indicator – Green

Green light flashes when recognition is successful