> For the complete documentation index, see [llms.txt](https://docs.zyfi.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zyfi.org/integration-guide/case-studies/case-study-click.md).

# Case Study: Click

<figure><img src="/files/JKPsZaZlL60eoimH9XwC" alt=""><figcaption></figcaption></figure>

[Click](https://clickapp.com/) is a revolutionary application in the digital media ecosystem, offering a "trust network" solution that enables creators and consumers to easily authenticate photo and video content. Using ZKsync blockchain technology, Click combats misinformation by providing a simple and intuitive platform to verify the authenticity of creations on-chain.&#x20;

To enhance the user experience, Click partnered with Zyfi to eliminate barriers related to gas fees.

## Gas Fees Management

Managing gas fees is a recurring challenge for blockchain-based applications, especially those aimed at the general public. These fees can create a significant barrier for users, making it harder to adopt and regularly use applications like Click, which seeks to democratize content authentication.&#x20;

Click's goal was to provide a seamless user experience where users could authenticate their content without worrying about transaction fees.

## Implementation of Zyfi

To address this, Click integrated Zyfi’s sponsored paymaster on ZKsync Era. This partnership allows users to authenticate their content without incurring any transaction fees.

With Zyfi’s solution:

* Users can register their creations without realizing they’re signing a blockchain transaction.
* Click eliminates technological barriers, delivering an accessible and smooth experience for all users.

<figure><img src="/files/cfyRubqrLB3z8nKtxIbJ" alt=""><figcaption><p><strong>Left screen:</strong> The photo is not yet authenticated on the blockchain.<br><strong>Right screen:</strong> The photo is signed on the blockchain with no fees paid.</p></figcaption></figure>

## UX/UI Implementation

The integration process followed a structured approach:

1. **Define On-Chain Actions and UI Improvements:**\
   The team focused on fully sponsoring transactions to offer the best user experience—no need to think about gas fees.
2. **API Integration:**\
   The API was integrated into the front end in just one day.
3. **Zero UI Adjustments:**\
   Since the transactions are gasless, no additional UI changes were required, as users are unaware they’re signing a blockchain transaction.

**Total time:** 1 development day. 🎉

## Results

Click attracted many users after the Zyfi integration, sponsoring over **53,000 transactions** as of December 11, 2024, with an average of 800 sponsored transactions per day.

<figure><img src="/files/96kcdp7xCPVMw7mv9qZ2" alt=""><figcaption><p>Daily sponsored transactions on ZKsync Era on Click using the Zyfi paymaster</p></figcaption></figure>

## Conclusion

The integration of Zyfi with Click represents not just a technological breakthrough but also a revolution in user experience within the on-chain authentification space.