In or Out?

When it comes to precision and accuracy in tennis, line calls play a pivotal role in determining the outcome of a match. In the professional circuit, high-tech systems like Hawk-Eye have become the gold standard for electronic line calling systems. However, these sophisticated tools have largely remained out of reach for everyday players.

Recreational, club, and semi-pro level matches still rely on human judgment— which, as we all know, isn't always flawless.

A Fair and Stress-Free Tennis Experience with Electronic Line Calling

Relying on technology in tennis helps players enjoy accurate calls, ensuring a fair and stress-free experience.

Zenniz sets a high standard for electronic line calling, offering an accessible solution for all types of matches, from casual games to competitive tournaments.

👉 See how Zenniz was used at the Finnish National Tennis League.

Line Calling Revolution

The world of tennis has been craving a reliable and accessible system for making accurate line calls. That’s where Zenniz steps in.

Our mission? To bring the precision and fairness of electronic line calls to players of all levels—not just the pros.

✅ No more disputes
✅ No more doubts
✅ Just crystal-clear decisions

Zenniz uses advanced tennis technology to ensure every call is made with precision. Acting as a digital judge, our system provides:

• Automated calls

• Challenging capabilities

With Zenniz, line calling in tennis becomes transparent and accurate.

User-Friendly and Reliable

The Zenniz interface makes it easy for players and tournament organizers to implement the system into their matches.

🔹 Just a few simple steps, and you’ll have the confidence of knowing that every call is backed by technology and precision.

Say goodbye to human error and hello to a new era of fairness in tennis!

👉 Check out what parents and coaches had to say about Zenniz at the Finland Bowl by Ten-Pro Global Junior Tour.

📢 “The experience with Zenniz is just completely 100% fair play.”
— Goran Novakovic, CEO of TEN-PRO

Margin of Error for Zenniz

We offer customers precise tracking, made possible with Zenniz’s patented tracking technology.

🔹 Constant improvements ensure that Zenniz remains at the forefront of electronic line calling systems.
🔹 Proven success in multiple high-level national and international junior tournaments.
🔹 Positive feedback from both players and organizers.

With Zenniz, players can have peace of mind knowing they receive accurate and reliable line calls every time.

👉 This video shows how Zenniz was used during the 2023-2024 Finnish Tennis League.

How It Works: Sound Triangulation & Cameras

Zenniz combines sound triangulation technology with four strategically placed cameras around the court. This setup accurately tracks the ball’s movement and determines whether it’s in or out with remarkable precision.

How does it work?

🎾 Microphones detect the sound of the ball as it makes contact with the court.
🎥 Four cameras verify the exact landing spot from multiple angles.

This technology ensures that even the fastest serves and most challenging shots are accurately called in real-time.

👉 Learn more about how Zenniz works.

Challenging Line Calls with Zenniz

With Zenniz, challenging a line call is as simple as it is for the pros:

1️⃣ Your opponent makes a questionable call.
2️⃣ Express your intent to challenge.
3️⃣ Go to the Zenniz device and press the "Challenge" or "Shot Replay" icon.
4️⃣ A list of your previous shots will appear. Find the shot you want to challenge.
5️⃣ Tap the court image or specific shot to zoom in and review the call.

A Fairer Match Experience

These simple steps ensure that every call is fair and accurate. The ability to challenge calls makes matches more relaxed and enjoyable for all players.

With Zenniz, you're in control of your game like never before.

🎾 Are you ready to experience the future of tennis?
👉 Book a demo!