Fourthline's Web SDK smoothly redirects clients from your website via QR code or SMS to a new browser window on their mobile device. The product workflow on the device is hosted by Fourthline on a secure, private subdomain. Alternatively, you can embed the SDK in your mobile site.

The SDK takes care of the user journey and orchestrates modules with a streamlined API flow. You can also easily level up from single products to multi-product solutions with no additional API requests.

All required images and data are captured in our best-practice UI and automatically uploaded to Fourthline for processing. You never handle sensitive personal data.

How it works

Supported products

The SDK supports the following products:

Flow

The flow is as follows:

User interface

Fourthline provides the mobile-responsive UI, which is built in line with industry-standard best practices for user experience (UX):

The UI includes guidance and animations to help clients understand the journey.
Clients may not know how to take photos with appropriate lighting, background, and framing, which can lead to processing delays or unnecessary rejections. The UI provides clients clear instructions and real-time feedback to optimize image quality and maximize conversion.
The UI validates data entered by clients in real time to reduce input errors.
You can localize the UI text in a range of languages, and customize fonts and colors to match the look-and-feel of your brand.
Fourthline collects analytics data and continually updates the UI to improve conversion, meet evolving regulatory requirements, and keep pace with market trends in UIs and UX.

Note

Fourthline ensures photos are taken during the workflow, in compliance with art. 41b of the European Banking Authority – Guidelines on the use of Remote Customer Onboarding Solutions under Article 13(1) of Directive (EU) 2015/849.

Redirect flow

You can redirect clients from your desktop or mobile website to the product workflow in a new browser window on their mobile device via QR code or a link in an SMS. This flow is typically hosted by you and embedded in your website.

QR code redirect

You display a QR code to the client on your website, which they scan with their mobile device. The QR code is unique for each SDK session.

SMS redirect

The client receives the workflow URL via SMS.

The client enters the valid phone number of their mobile device, and then clicks or taps Request SMS.
While awaiting the SMS, the client can check their mobile phone number is correct.
If the countdown reaches zero and the client still hasn't received an SMS, they can click or tap Try again to go back and re-enter the phone number.
The client can re-request the SMS a maximum of 3 times.

Desktop website

If the client is accessing your website via their desktop browser, initialize the Web SDK, display the redirect options, and then redirect the client to the workflow URL in their mobile browser.

Mobile website

If the client is accessing your website via their mobile browser, there are 2 options:

You display the redirect options, and then redirect them to the workflow URL on your subdomain.
If the SDK detects the client's mobile device, instead of displaying the redirect options, it displays a Continue to mobile device screen. This creates a better user experience.

Videos

Explore the following example videos of our solutions and modules:

Identity Verification & modules

Identity Verification

The European Identity Verification flow on Web SDK is as follows:

Notes

• The SDK detects the document type and adjusts the UI accordingly.
• The SDK provides selfie photo and liveness guidance, detecting the client's face (one face only) and ensuring it is within the frame.

Qualified Electronic Signature

The Qualified Electronic Signature module on Web SDK is as follows:

Bank Account Verification

The Bank Account Verification module on Web SDK is as follows:

Physical Proof of Address

The Physical Proof of Address module on Web SDK is as follows:

Note

The client can either take a photo of a document or upload a file.

Tax number

The Tax number module on Web SDK is as follows:

Note

The SDK provides a custom UI for Dutch, Italian, and Spanish tax numbers.

Client data

The SDK collects the client's personal data, address, and contact details in an additional module:

Market-specific solutions

French solution

The French Identity Verification flow on Web SDK is as follows:

German solution

The German Identity Verification flow on Web SDK is as follows:

Flow management

Progress screen

At each step in the product workflow, the original browser window tracks the client's progress:

Permissions

The Web SDK asks for:

Camera permissions to take document photos and video, and selfie photo and video
Location permissions to access the client's geolocation and device metadata

Permissions are only requested once during the flow.

If the client blocks permissions, the SDK shows the following screens:

If the client decides to unblock permissions to proceed with the flow, the SDK provides instructions.

Disclaimer

We continually update and improve our SDKs, so all videos and screenshots on this page are examples provided for illustrative purposes only.

How to integrate

Configuration

For prerequisites and configuration information, see Web Setup.

Integration manuals

For step-by-step integration manuals, see the relevant integration guide:

UI customization

For how to customize the UI, see Web UI Customization.

Support

For any questions, contact your implementation manager.

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