Device Intelligence

Device intelligence collects and analyzes device characteristics to identify fraud, detect suspicious behavior, and prevent application abuse.

How Device Intelligence Works

┌─────────────────────────────────────────────────────────┐
│                USER'S DEVICE                             │
│  Browser, OS, Hardware, Network, Location                │
└─────────────────────────┬───────────────────────────────┘
                          │
                          v
┌─────────────────────────────────────────────────────────┐
│            DEVICE FINGERPRINTING                         │
│  Collect 100+ signals to create unique identifier        │
└─────────────────────────┬───────────────────────────────┘
                          │
                          v
┌─────────────────────────────────────────────────────────┐
│              FRAUD DATABASE                              │
│  Check against known fraudulent devices                  │
└─────────────────────────┬───────────────────────────────┘
                          │
                          v
┌─────────────────────────────────────────────────────────┐
│              RISK ASSESSMENT                             │
│  Calculate device risk score (0-100)                     │
└─────────────────────────────────────────────────────────┘

Collecting Device Data

Web Integration

Add the TrustGate SDK to collect device signals:

<script src="https://cdn.bytrustgate.com/device-sdk.js"></script>
<script>
  const deviceData = await TrustGate.collectDeviceSignals();

  // Include in API request
  fetch('/api/verify', {
    method: 'POST',
    body: JSON.stringify({
      applicant_id: 'applicant_123',
      device_data: deviceData
    })
  });
</script>

Mobile Integration

Coming soon: Native mobile SDKs for React Native, iOS, and Android are under development. For now, collect device data via the REST API:

curl -X POST https://api.bytrustgate.com/api/v1/device/analyze \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"ip_address": "203.0.113.1", "user_agent": "Mozilla/5.0..."}'

API Submission

curl -X POST https://api.bytrustgate.com/v1/device/analyze \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "applicant_id": "550e8400-e29b-41d4-a716-446655440000",
    "device_data": {
      "fingerprint": "fp_abc123...",
      "signals": {...}
    }
  }'

Device Signals Collected

Browser Signals

Signal	Description
User agent	Browser and version
Language	Browser language settings
Timezone	Local timezone
Screen resolution	Display dimensions
Color depth	Display color capability
Plugins	Browser plugins installed
Canvas fingerprint	Graphics rendering signature
WebGL fingerprint	3D rendering signature
Audio fingerprint	Audio processing signature

Network Signals

Signal	Description
IP address	Connection IP
IP geolocation	Derived location
ISP	Internet service provider
Connection type	Wifi, cellular, etc.
VPN detection	VPN/proxy indicators
Tor detection	Tor network usage

Device Signals

Signal	Description
Operating system	OS type and version
Device type	Desktop, mobile, tablet
Device model	Specific device model
CPU cores	Processor information
Memory	Available RAM
Touch support	Touchscreen capability
Battery	Battery status (mobile)

Device Risk Score

Get Device Analysis

curl -X GET "https://api.bytrustgate.com/v1/device/{device_id}" \
  -H "Authorization: Bearer YOUR_API_KEY"

Response

{
  "device_id": "dev_789012",
  "fingerprint": "fp_abc123def456",
  "risk_score": 72,
  "risk_level": "high",
  "first_seen": "2025-01-15T10:00:00Z",
  "application_count": 5,
  "risk_factors": [
    {
      "factor": "multiple_applications",
      "severity": "high",
      "details": "5 applications from this device in 7 days"
    },
    {
      "factor": "vpn_detected",
      "severity": "medium",
      "details": "Commercial VPN service detected"
    },
    {
      "factor": "timezone_mismatch",
      "severity": "medium",
      "details": "Browser timezone doesn't match IP location"
    }
  ],
  "associations": {
    "applicants": ["app_001", "app_002", "app_003", "app_004", "app_005"],
    "ips": ["192.168.1.1", "10.0.0.1"],
    "locations": ["New York, US", "London, UK"]
  }
}

Risk Factors

High Risk Indicators

Factor	Risk Contribution	Description
device_previously_fraudulent	+40	Device linked to confirmed fraud
device_emulator	+35	Virtual device detected
device_rooted_jailbroken	+25	Modified OS detected
multiple_applications	+20	Many apps from same device
tor_network	+25	Tor exit node detected

Medium Risk Indicators

Factor	Risk Contribution	Description
vpn_detected	+15	VPN or proxy in use
datacenter_ip	+15	IP from hosting provider
timezone_mismatch	+10	Timezone inconsistency
browser_automation	+20	Automation tools detected
incognito_mode	+5	Private browsing

Low Risk Indicators

Factor	Risk Contribution	Description
new_device	+5	First time seeing device
unusual_browser	+5	Uncommon browser
outdated_browser	+5	Old browser version

Velocity Controls

Configure Device Velocity

curl -X PUT https://api.bytrustgate.com/v1/settings/device-velocity \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "max_applications_per_device": {
      "count": 3,
      "period_days": 30,
      "action": "flag_for_review"
    },
    "max_applications_per_ip": {
      "count": 5,
      "period_days": 1,
      "action": "block"
    },
    "cooldown_after_rejection": {
      "hours": 24,
      "action": "block"
    }
  }'

Velocity Check Response

{
  "velocity_check": {
    "passed": false,
    "violations": [
      {
        "rule": "max_applications_per_device",
        "current": 4,
        "limit": 3,
        "period": "30d"
      }
    ],
    "action": "flag_for_review"
  }
}

Device Linking

Find Linked Devices

curl -X GET "https://api.bytrustgate.com/v1/device/{device_id}/linked" \
  -H "Authorization: Bearer YOUR_API_KEY"

Response

{
  "device_id": "dev_789012",
  "linked_devices": [
    {
      "device_id": "dev_789013",
      "link_type": "same_ip",
      "confidence": 0.95,
      "shared_signals": ["ip_address", "isp"]
    },
    {
      "device_id": "dev_789014",
      "link_type": "similar_fingerprint",
      "confidence": 0.78,
      "shared_signals": ["canvas_fingerprint", "webgl_fingerprint"]
    }
  ],
  "linked_applicants": [
    {
      "applicant_id": "app_001",
      "status": "approved"
    },
    {
      "applicant_id": "app_002",
      "status": "rejected",
      "rejection_reason": "fraud"
    }
  ]
}

Workflow Integration

Auto-Flag High-Risk Devices

curl -X POST https://api.bytrustgate.com/v1/workflows/rules \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "rule_id": "flag_risky_device",
    "trigger": "device_analyzed",
    "conditions": {
      "all": [
        {"field": "device_risk_score", "operator": "gte", "value": 70}
      ]
    },
    "actions": [
      {
        "type": "add_flag",
        "flag": "high_risk_device"
      },
      {
        "type": "create_case",
        "case_type": "fraud",
        "priority": "high"
      }
    ]
  }'

Privacy Considerations

• Device fingerprinting complies with GDPR when proper consent is obtained
• No PII is collected directly - only device characteristics
• Data retention follows your configured policies
• Users can request device data deletion

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Next Steps

• Email Verification - Email risk assessment
• Phone Verification - Phone validation
• Risk Signals - All fraud signals