Android

The SDK requires a minimum API level of 26 (Android 8.0 Oreo). Calls on devices below API 26 return silently without an error.

Prerequisites

Android API level 26 or higher
App ID, Client ID, and Client Secret from the OTPless dashboard

Installation

The SDK is distributed on Maven Central. In your app-level build.gradle, add the dependency:

build.gradle

dependencies {
    implementation 'io.github.otpless-tech:otpless-intelligence-sdk:1.0.6.5'
}

Check Maven Central for the latest version. Sync your project with Gradle files after adding the dependency.

Add permissions

In your AndroidManifest.xml, add the required and optional permissions:

AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET" />

<!-- Optional: improves accuracy -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<!-- Optional: used to calculate SIM affinity -->
<uses-permission android:name="android.permission.READ_PHONE_STATE" />

Initialize the SDK

Call initialize in the onCreate() method of your Application class. Pass your App ID, Client ID, and Client Secret as a map.

Application.kt

import com.otpless.impl.veritaserum.OtplessDeviceIntelligence

override fun onCreate() {
    super.onCreate()

    val creds = mapOf(
        "appId" to "<OTPLESS_APP_ID>",
        "clientId" to "<OTPLESS_CLIENT_ID>",
        "clientSecret" to "<OTPLESS_CLIENT_SECRET>"
    )

    OtplessDeviceIntelligence.initialize(applicationContext, creds)
}

Integrate with OtplessAuth SDK

If you are already using the OtplessAuth SDK, you can enable device fingerprinting directly on OtplessRequest without calling getIntelligence() manually. Set the deviceFingerprintMode property before calling OtplessSDK.start().

import com.otpless.v2.android.sdk.dto.DeviceFingerprintMode
import com.otpless.v2.android.sdk.dto.OtplessRequest

lifecycleScope.launch(Dispatchers.IO) {
    val otplessRequest = OtplessRequest()
    otplessRequest.setPhoneNumber("PHONE_NUMBER", "COUNTRY_CODE")
    otplessRequest.deviceFingerprintMode = DeviceFingerprintMode.SYNC
    OtplessSDK.start(request = otplessRequest, callback = ::onOtplessResponse)
}

`DeviceFingerprintMode` values

Value	Behaviour
`NONE`	Device fingerprinting is disabled. Default value.
`ASYNC`	Fingerprint is collected in parallel with the auth request. Does not add latency.
`SYNC`	Fingerprint is collected before the auth request is sent. Ensures fingerprint data is always included.

Fetch device intelligence

getIntelligence() is a suspend function. Call it from a coroutine scope and handle the result. It optionally accepts an UpdateInfo object to attach user-level and event-level context.

import com.otpless.impl.veritaserum.OtplessDeviceIntelligence
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch

CoroutineScope(Dispatchers.IO).launch {
    val result = OtplessDeviceIntelligence.getIntelligence()
    result.onSuccess { response ->
        val intelligence = response.intelligenceResponse
        // Act on the result
    }
    result.onFailure { error ->
        // Handle the error
    }
}

Pass additional context (optional)

Pass an UpdateInfo object directly to getIntelligence() to attach user-level and event-level context. This enriches the result and enables more accurate risk scoring.

import com.otpless.impl.veritaserum.OtplessDeviceIntelligence
import com.otpless.impl.veritaserum.core.UpdateInfo
import com.otpless.impl.veritaserum.core.PhoneInputType
import com.otpless.impl.veritaserum.core.OtpInputType
import com.otpless.impl.veritaserum.core.UserEventType
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch

CoroutineScope(Dispatchers.IO).launch {
    val updateInfo = UpdateInfo(
        userId = "user-123",
        phoneNumber = "1234567890",
        phoneInputType = PhoneInputType.MANUAL,
        otpInputType = OtpInputType.AUTO_FILLED,
        userEventType = UserEventType.TRANSACTION,
        merchantId = "merchant-id",
        additionalInput = mapOf(
            "TRANSACTION_ID" to "txn-abc-123",
            "METHOD" to "UPI",
            "AMOUNT" to "500",
            "CURRENCY" to "INR"
        )
    )

    val result = OtplessDeviceIntelligence.getIntelligence(updateInfo = updateInfo)
    result.onSuccess { response ->
        val intelligence = response.intelligenceResponse
        // Act on the result
    }
    result.onFailure { error ->
        // Handle the error
    }
}

`UpdateInfo` fields

Field	Type	Description
`userId`	`String?`	Your internal user identifier. Used to correlate the result with a user account.
`phoneNumber`	`String?`	Customer phone number.
`phoneInputType`	`PhoneInputType?`	How the phone number was entered: `MANUAL`, `COPY_PASTED`, `GOOGLE_HINT`.
`otpInputType`	`OtpInputType?`	How the OTP was entered: `MANUAL`, `COPY_PASTED`, `AUTO_FILLED`.
`userEventType`	`UserEventType?`	The action being performed: `LOGIN`, `SIGNUP`, `TRANSACTION`, `OTHERS`.
`merchantId`	`String?`	Merchant identifier, if applicable.
`additionalInput`	`Map<String, String>?`	Arbitrary key-value pairs for custom context.

Sample response

Success

{
    "requestId": "403ad427-5018-47b9-b6e8-790e17a78201",
    "sessionId": "233sd769-9367-39h9-b9e8-650eb6e87820",
    "newDevice": false,
    "deviceId": "43fccb70-d64a-4c32-a251-f07c082d7034",
    "vpn": false,
    "proxy": false,
    "emulator": true,
    "cloned": false,
    "geoSpoofed": false,
    "rooted": false,
    "ip": "106.219.161.71",
    "remoteAppProviders": false,
    "remoteAppProvidersCount": 3,
    "mirroredScreen": false,
    "hooking": true,
    "factoryReset": true,
    "appTampering": true,
    "sessionRiskScore": 99.50516,
    "deviceRiskScore": 99.50516,
    "clientUserIds": ["difansd23r32", "2390ksdfaksd"],
    "genuineInstall": false,
    "developerOptionsEnabled": true,
    "usbDebugging": true,
    "wirelessDebugging": false,
    "unsecuredWifi": false,
    "harmfulAppDetected": false,
    "blacklistedDevice": false,
    "keyloggerDetected": false,
    "factoryResetTime": 1743419662000,
    "gpsLocation": {
        "address": "F2620, Block F, Sushant Lok III, Sector 57, Gurugram, Haryana 122011, India",
        "adminArea": "Haryana",
        "countryCode": "IN",
        "countryName": "India",
        "featureName": "F2620",
        "latitude": "28.420385999999997",
        "locality": "Gurugram",
        "longitude": "77.088926",
        "postalCode": "122011",
        "subAdminArea": "Gurgaon Division",
        "subLocality": "Sector 57"
    },
    "ipDetails": {
        "country": "IN",
        "fraudScore": 27.0,
        "city": "New Delhi",
        "isp": null,
        "latitude": 28.60000038,
        "region": "National Capital Territory of Delhi",
        "asn": "",
        "longitude": 77.19999695
    },
    "simInfo": {
        "simIds": [
            { "id": 1, "simSlotIndex": 0, "carrierName": "JIO 4G | Jio", "eSim": false },
            { "id": 3, "simSlotIndex": 1, "carrierName": "airtel", "eSim": true }
        ],
        "totalSimUsed": 10
    },
    "deviceMeta": {
        "cpuType": "Qualcomm Technologies, Inc SM7325",
        "product": "I2126i",
        "androidVersion": "14",
        "storageAvailable": "29340553216",
        "storageTotal": "111156146176",
        "model": "I2126",
        "screenResolution": "1080x2316",
        "brand": "iQOO",
        "totalRAM": "7679795200"
    },
    "appAnalytics": {
        "affinity": {
            "entertainment": 0.5,
            "gaming": 0.6,
            "productivity": 0.8,
            "food_and_drink": 0.4
        }
    },
    "ruleAction": {
        "action": "WARN",
        "name": "VPN enabled",
        "description": "A VPN connection was detected on this device.",
        "message": "For security reasons, please disable your VPN and try again."
    },
    "appliedRules": {
        "rules": {
            "55 : VPN enabled": 0,
            "99 : App is tampered": 50
        },
        "totalScore": 50.0
    },
    "additionalData": {}
}

Error

{
  "requestId": "7e12d131-2d90-4529-a5c7-35f457d86ae6",
  "errorMessage": "OTPless server error"
}

Response fields

Field	Type	Description	Default
`requestId`	string	Unique identifier for the request.	`""`
`sessionId`	string	Unique identifier for the current app session.	`""`
`newDevice`	boolean	Whether this is the first time this device has been seen.	`false`
`deviceId`	string	Stable identifier for the device. Persists across reinstalls and factory resets.	`""`
`sessionRiskScore`	float	Risk score (0–100) based on the current session state.	`0.0`
`deviceRiskScore`	float	Risk score that also factors in the device’s historical state across past sessions.	`0.0`
`vpn`	boolean	A VPN is active on the device.	`false`
`proxy`	boolean	The device is behind a proxy server.	`false`
`emulator`	boolean	The app is running on an emulator rather than physical hardware.	`false`
`rooted`	boolean	The device has been modified for root access.	`false`
`cloned`	boolean	The user is running a cloned instance of the app.	`false`
`geoSpoofed`	boolean	The device’s location is being faked.	`false`
`remoteAppProviders`	boolean	A remote access application (e.g. AnyDesk, TeamViewer) is installed.	`false`
`remoteAppProvidersCount`	number	Number of remote access applications detected.	`0`
`mirroredScreen`	boolean	The device’s screen is being mirrored.	`false`
`hooking`	boolean	The app has been altered by a hooking framework.	`false`
`factoryReset`	boolean	A suspicious factory reset has been performed.	`false`
`factoryResetTime`	long	Timestamp of the last factory reset. `-1` if not detected.	`-1`
`appTampering`	boolean	The app binary has been modified in an unauthorized way.	`false`
`genuineInstall`	boolean	The app was installed from an official, trusted source.	`false`
`developerOptionsEnabled`	boolean	Developer Options are enabled on the device.	`false`
`usbDebugging`	boolean	USB debugging is enabled.	`false`
`wirelessDebugging`	boolean	Wireless (ADB over Wi-Fi) debugging is enabled.	`false`
`unsecuredWifi`	boolean	The device is connected to an unsecured Wi-Fi network.	`false`
`harmfulAppDetected`	boolean	Potentially harmful applications are installed on the device.	`false`
`blacklistedDevice`	boolean	The device is on the OTPless internal blocklist.	`false`
`keyloggerDetected`	boolean	Keylogging behavior has been detected on the device.	`false`
`ip`	string	Current IP address of the device.	`""`
`ipDetails`	object	IP metadata including country, city, ISP, coordinates, and fraud score.	`{}`
`gpsLocation`	object	GPS location details including latitude, longitude, and address.	`{}`
`simInfo`	object	SIM card details: current SIMs per slot and total SIMs used over the device’s lifetime.	`{}`
`deviceMeta`	object	Device hardware metadata: brand, model, OS version, screen resolution, storage, RAM, CPU.	`{}`
`appAnalytics`	object	App affinity scores (0–1) per category based on installed apps.	`{}`
`clientUserIds`	array	All user IDs associated with this device across its history.	`[]`
`ruleAction`	object	The triggered rule and recommended action (`ALLOW`, `WARN`, `BLOCK`) with a user-facing message.	`{}`
`appliedRules`	object	Full list of evaluated rules, their scores, and the total rule score.	`{}`
`additionalData`	object	Reserved for custom fields returned based on your account configuration.	`{}`

Device Fingerprint

SDK

Backend API

Prerequisites

Installation

Add permissions

Initialize the SDK

Integrate with OtplessAuth SDK

`DeviceFingerprintMode` values

Fetch device intelligence

Pass additional context (optional)

`UpdateInfo` fields

Sample response

Success

Error

Response fields

​Prerequisites

​Installation

​Add permissions

​Initialize the SDK

​Integrate with OtplessAuth SDK

​DeviceFingerprintMode values

​Fetch device intelligence

​Pass additional context (optional)

​UpdateInfo fields

​Sample response

​Success

​Error

​Response fields

Prerequisites

Installation

Add permissions

Initialize the SDK

Integrate with OtplessAuth SDK

`DeviceFingerprintMode` values

Fetch device intelligence

Pass additional context (optional)

`UpdateInfo` fields

Sample response

Success

Error

Response fields