Maximize mobile conversion
and conclude contracts in record time

Europe's simplest option,to obtain electronic signatures on a large scale
Obtain signatures & data
The sproof Fastlane is a maximally simplified digital process for the barrier-free collection of legally valid e-signatures or form data. The strength of the sproof Fastlane is the flexible UI design of the user journey and the possibilities to integrate it flexibly into your processes and use cases.

Custom forms and B2C workflows for e-signatures
Radically accelerate signature processes
A flexible, low-threshold and barrier-free process in your corporate design enables high closing rates through optimal user guidance and user experience. A copy of the signed contract or the transmitted data will be sent to the recipients by e-mail.
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Salzburg AG: sproof Fastlane in customer service
Case Study
Austria's energy and infrastructure service provider has long been digitizing its signature processes with sproof Sign. Now sproof Fastlane is also being used for SEPA mandates - for a much more efficient and convenient customer experience.
To the case studyAreas of application
Place the Fastlane where your applications require it,
- Obtain e-signatures on site
Customers and external parties scan a QR code on site and are guided through the fastlane.
- Obtain e-signatures by mail
Customers and external parties scan a QR code on a document sent by post and are guided through the fastlane.
- Invite to sign by email or SMS
Customers and external parties receive a link and are guided through Fastlane.
- Embedded in your web solutions and processes
External parties and customers sign directly in your web environment without forwarding. The Fastlane is embedded as a widget or iFrame




Maximum simplicity and efficiency
Our signature solution is integrated into any IT infrastructure at lightning speed. Thanks to the simplest interface, there is no need for any training for your team, external parties or patients.
Learn moreMaximum legal certainty
Each digital signature is verified according to the strictest standards (e.g. eIDAS). Automatic, end-to-end audit trails document every step of your workflow and ensure legal validity.
Learn moreMaximum data protection
All services are hosted within the EU and without the involvement of third countries (no US reference). The handling of sensitive health data meets the highest standards.
Learn more

How to integrate seamlessly
and the legally valid use of electronic signatures
Find out how sproof sign, as the leading European platform for digital signatures, supports companies and organizations in processing contracts efficiently, legally compliant and completely digitally. Discover flexible integrations, central workflows, individual adaptations to your corporate design and the QES hub for signatures valid throughout Europe.
Info folder sproof Sign
Request information folderReady to conclude legally compliant contracts in record time?
Maximize your conversion rates with sproof Fastlane. Enable your customers to conclude contracts and SEPA mandates in seconds - mobile, without registration and directly at the point of sale.









