Youverify Liveness iOS SDK

Our iOS SDK enables seamless integration of real-time liveness detection into your mobile applications. To get started with our SDK, follow the guide below:

Get your Public Merchant Key

Installation

To install, run one of the following commands:

pod 'pod 'YouVerifyLivenessSDK'

Usage

1. Import the package into your web page like so:

import YVLivenessSDK

1. Initialize an instance of the package, like so:

@StateObject var yvLiveness: IosSDK

_yvLiveness = StateObject(wrappedValue: IosSDK(options))

For a list of the valid options, check this out

1. Start the process, like so:

yvLiveness.startSDK();

This could also be called with an array of tasks. The supplied tasks override those provided during initialization.

let livenessTasks = [
    TaskProperties(task: 
        YVTask.completeTheCircle(CompleteTheCircleTask(difficulty: .medium))
    )
]

yvLiveness.startSDK(tasks: livenessTasks)

1. Add the SDKView to your page, and the controls for the modal as so:

if iosSDK.isDialogVisible {
    SDKView(
        sdk: iosSDK
    )
}

Full Example:

@StateObject var iosSDK: IosSDK

init() {
    _iosSDK = StateObject(wrappedValue: IosSDK(
        publicKey: "PUBLIC_KEY",
        user: SDKUser,
        onSuccess: {data in
            print("The data returned is \(data)")
        }
    ))
}

Button(action: {
    iosSDK.startSDK(tasks: [
        TaskProperties(task: 
            YVTask.completeTheCircle(CompleteTheCircleTask(difficulty: .medium))
        )
    ])
}) {
    Text("Complete the Circle")
}

if iosSDK.isDialogVisible {
    SDKView(
        sdk: iosSDK
    )
}

Options

Option	Type	Required	Description	Default Value	Possible Values
sandboxEnvironment	Boolean	No	Sets whether session should run in sandbox or live mode	true	true, false
tasks	Array	No	NoSets tasks that need to be performed for liveness to be confirmed	nil	See tasks
user	Class	Yes	Sets details of user for which liveness check is being performed	-	Any string
user.firstName	String	Yes	First name of user	-	Any string
user.lastName	String	No	Last name of user	nil	Any string
user.email	String	No	Email of user	nil	Any string
onClose	Function	No	Callback function that gets triggered when modal is closed	nil	Any valid function
onSuccess	Function	No	Callback function that gets triggered when all tasks have been completed and passed. Called with completion data	nil	Any valid function
onFailure	Function	No	Callback function that gets triggered when at least one task fails. Called with completion data	nil	Any valid function

Tasks

A task is a series of instructions for users to follow to confirm liveness. Find below a list of tasks.

PS: We aim to frequently add to this list a variety of fun and yet intuitive ways of confirming liveness, so be on the lookout for more tasks!

They are:

Complete The Circle

User passes task by completing imaginary circle with head movement.

CompleteTheCircleTask option

Option	Type	Required	Description	Default Value	Possible Values
difficulty	TaskDifficulty	No	Sets difficulty of task	.medium	.easy, .medium, .hard
timeout	Number	No	Sets time in milliseconds after which task automatically fails	nil	Any number in milliseconds

Yes Or No

User passes task by answering a list of arbitrary questions set by you with the tilting of the head; right for a yes and left for a no.

YesOrNoTask option

Option	Type	Required	Description	Default Value	Possible Values difficulty
difficulty	TaskDifficulty	No	Sets difficulty of task	.medium	.easy, .medium, .hard
timeout	Number	No	Sets time in milliseconds after which task automatically fails	nil	Any number in milliseconds
questions	Array	No	A set of questions to ask user	nil	See nested options below
questions.question	String	Yes	Question to ask user. Should be a true or false type question. Eg: "Are you ready"	-	Any string
questions.answer	Bool	Yes	Answer to the question	-	true, false
questions.errorMessage	String	No	Error message to display if user gets question wrong	undefined	Any string

Motions

User passes task by performing random motions in random sequences, which include nodding, blinking and opening of mouth.

MotionsTaskClass option

Option	Type	Required	Description	Default Value	Possible Values
difficulty	TaskDifficulty	No	Sets difficulty of task	.medium	.easy, .medium, .hard
timeout	TimeInterval	No	Sets time in milliseconds after which task automatically fails	nil	Any number in milliseconds
maxNods	Int	No	Maximum amount of nods a user is asked to perform	5	Any number
maxBlinks	Int	No	Maximum amount of nods a user is asked to perform	5	Any number

TaskProperties

User passes in the class and preferred settings for each task.

Option	Type	Required	Description	Default Value	Possible Values
task	YVTask	Yes	Id of task	-	YVTask.completeTheCircle(Task_class eg. CompleteTheCircleTask)
timeout	TimeInterval	No	Sets time in milliseconds after which task automatically fails	nil	Any number in milliseconds

Liveness Data

The onSuccess and onFailure callbacks (if supplied) are passed the following data:

Option	Type	Description
data	Object	Data passed through callback
data.faceImage	String	Face Image of user performing liveness check
data.livenessClip	String	Video of user performing liveness check
data.passed	Bool	Indicator on whether liveness check passed or failed
data.metadata	Any	Metadata passed in during initialization

Credits

This SDK is developed and maintained solely by Youverify