Device Signals

Collect device fingerprints and detect emulators on mobile.

Collecting Device Signals

final simplr = SimplrFraud();
final device = await simplr.collectDeviceSignals(context);

print(device.fingerprint);      // Unique device hash
print(device.isEmulator);       // true if emulator detected
print(device.model);            // "iPhone 14 Pro"

Device Signal Fields

Field	Type	Description
fingerprint	String	Unique device hash
device_id	String	Persistent identifier
platform	String	"ios" or "android"
os_version	String	OS version
model	String	Device model
manufacturer	String	Device manufacturer
screen_resolution	String	Screen dimensions
is_emulator	bool	Emulator detected

Emulator Detection

Detects iOS simulators and Android emulators:

if (device.isEmulator) {
  // Block or flag for review
  showError('Emulators not allowed');
  return;
}

Detection Signals

Android:

• Hardware fingerprint checks
• Model name patterns
• Build properties

iOS:

• Architecture detection (x86, i386)
• Simulator environment

Full Response

class DeviceSignals {
  final String fingerprint;
  final Map<String, String> fingerprintComponents;
  final String deviceId;
  final DateTime deviceIdCreatedAt;
  final String platform;
  final String osVersion;
  final String model;
  final String manufacturer;
  final String brand;
  final String screenResolution;
  final double pixelRatio;
  final String timezone;
  final String language;
  final int cpuCores;
  final bool isEmulator;
  final double emulatorConfidence;
}