Friendly Captcha for
Kotlin
Kotlin is a modern, statically typed programming language that blends object-oriented and functional features with concise syntax and strong type safety. Secure your Kotlin apps with a privacy-first Kotlin Captcha from Friendly Captcha. Prevent spam, protect user data, and ensure invisible verification.
Field of application/
Backend
Tired of clicking on cars?
Friendly Captcha is the user-friendly way to stop spam and bots - no labeling needed.
Get rid of annoying labeling tasks. Make spam protection easy and privacy compliant.
Happy users, increased conversion rates
With Friendly Captcha no user tasks are needed. It runs automatically in the background.
Fully accessible and WCAG compliant
Don’t exclude any users, Friendly Captcha is entirely barrier-free.
Privacy compliant with GDPR, CCPA, LGPD and PIPL
Friendly Captcha protects users’ privacy at the highest level of data protection.
European servers for maximum data protection
Ensure that your customers’ personal data remains in the EU.
The Kotlin Captcha
How the integration works
1.
Create a Friendly Captcha account
Creating an account is completely free, all you need is a valid email address and you’re ready to go. Choose a plan that covers your needs. The first 30 days are free of charge.
2.
Create an 'Application' to get a sitekey
Create an application in the Friendly Captcha dashboard to get a sitekey for your integration, as shown in the screenshot below.
3.
Create an API key to interact with the API
Create an API key in the Friendly Captcha dashboard, as shown in the screenshot below.
Please make sure to copy and save the API key as you can only access it once.
4.
Complete your billing details
To ensure that your account remains functional after the 30-day trial period, make sure to enter your billing information in the Friendly Captcha dashboard.
You can adjust and cancel your Friendly Captcha plan online at any time.
5.
Integrate the source code into your Kotlin application
KotlinShare the integration code with your developer via the link below to integrate Friendly Captcha into your Kotlin application.
https://github.com/FriendlyCaptcha/friendly-captcha-jvm
6.
Connect Friendly Captcha with Kotlin
To finish the integration, share with your developer the sitekey generated in step 2 and the API key generated in step 3.
The Friendly Captcha widget will appear in your Kotlin frontend.
FAQ
A Kotlin CAPTCHA is a bot protection service integrated into Kotlin applications that ensures interactions are performed by real users rather than automated bots. It helps secure data entry points and form submissions in your Kotlin applications by filtering out spam, bot attacks, and malicious traffic. Friendly Captcha offers a modern, privacy-first CAPTCHA that operates invisibly in the background – unlike traditional CAPTCHAs that may collect personal data (like Google’s reCAPTCHA) or frustrate users with visual puzzles.
Friendly Captcha for Kotlin operates by assigning cryptographic puzzles to the user’s device, which are solved invisibly in the background. This proof-of-work mechanism ensures bot protection without interfering with the user experience. It’s seamless, non-disruptive, and fully compliant with WCAG accessibility standards.
Friendly Captcha is the leading CAPTCHA solution for Kotlin. As a European provider, it offers strong privacy compliance, robust data protection, and excellent usability. Friendly Captcha outpaces traditional options like Google reCAPTCHA. Friendly Captcha delivers invisible, privacy-first bot protection specifically suited to Kotlin environments.
Yes, implementing a CAPTCHA in Kotlin applications is essential for securing login forms, registrations, payments, or any area vulnerable to automated abuse. Next-gen CAPTCHA solutions like Friendly Captcha provide advanced protection against bots and spam without sacrificing the user experience, using a non-intrusive verification method that runs entirely in the background.
A Kotlin CAPTCHA helps protect your application from automated threats while preserving accessibility and privacy. Friendly Captcha’s invisible approach offers robust bot mitigation without data collection or intrusive challenges. It complies with major privacy regulations like GDPR and CCPA, making it an ideal choice for modern Kotlin development.
Integrating Friendly Captcha into your Kotlin forms typically takes around 10 minutes. First, generate your site key and secret key. Then, add the widget to your front-end and configure the SDK within your Kotlin application. Finally, implement server-side validation to complete the integration and protect your forms effectively.
Yes, with Friendly Captcha, Kotlin CAPTCHA implementations are fully accessible. It avoids visual or auditory challenges, ensuring that users with disabilities can interact with your application smoothly. The background verification ensures a barrier-free experience that complies with accessibility standards.
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