To enhance practice efficiency and elevate the patient experience, Cubular developed greeets — a tablet-based check-in solution fully integrated into Teemer’s cloud-native dental platform. Built with Flutter and designed for real-world clinic workflows, greeets enables patients to check in via QR code and facial focus detection, while syncing live with appointment data. Delivered in under 8 weeks and showcased live at IDS 2023, the solution is now positioned for broader rollout across Teemer’s customer base.
The Challenge
Teemer, one of Germany’s most dynamic cloud-based dental practice management systems, sought a seamless, in-practice self check-in experience to reduce front desk congestion and streamline patient arrivals.
The solution needed to:
Operate offline and unattended on tablet terminals
Integrate securely and smoothly with Teemer’s appointment system
Be intuitive for patients, and compliant with data privacy standards
The challenge: deliver a robust, brand-ready solution in time for Teemer’s live presentation at the IDS — the world’s leading dental trade show.
Our Approach
We built greeets as a modular, platform-agnostic solution that could plug directly into Teemer’s ecosystem:
The Terminal App (Frontend)
Built with Flutter for Android tablets
Elegant kiosk-style interface optimized for patient usability
Features:
QR Code scanning of appointment invitations
Facial Focus Detection to avoid unattended check-ins
Live feedback for successful registration
The Teemer Integration
Syncs with patient data and appointment slots via secure API
Matches QR scans with daily schedules in real time
Pushes check-in confirmations directly to the front desk interface
Privacy & Support
No patient data stored on device
Session-based architecture with secure backend handling
Ongoing 3rd-level support via SLA
Scalable for broader roll-out across Teemer practices
The Result
The greeets Check-In App was launched successfully as a live demo at IDS 2025, receiving strong feedback from dental professionals and industry stakeholders. Highlights:
🚀 Fully working prototype delivered in under 8 weeks
📱 Showcased on live tablet stations at the Teemer booth
🔌 Deep integration with Teemer’s backend architecture
📡 Encrypted data transfer, GDPR-compliant handling
🤝 Negotiations for long-term support and further rollout via SLA & development framework agreement
Why It Matters
greeets is a strong example of how Cubular:
Turns real-world friction into clean digital workflows
Delivers ready-to-integrate solutions under tight timelines
Handles trade show-grade reliability with production-ready code
It also proves how lightweight hardware + strong UX + focused integrations can radically improve practice efficiency — without overcomplicating tech stacks.
Behind greeets’ seamless user experience lies a sophisticated technology architecture designed for reliability, scalability, and real-time performance:
We built the core backend in Go (Golang), leveraging its exceptional concurrency model and performance characteristics for handling real-time patient check-ins. The system utilizes scalable WebSocket connections for instant communication between tablets and the practice management system, while WebRTC capabilities enable future expansion into video consultations and remote patient interactions.
The patient-facing application runs on Flutter, allowing us to deploy a single codebase across Android tablets in kiosk mode and mobile devices. This approach ensures consistent user experience while maintaining the flexibility to adapt to different hardware configurations and screen sizes.
To prevent unauthorized or accidental check-ins, we integrated TensorFlow-powered facial recognition that ensures patients are actively present during the check-in process. This facial focus detection runs efficiently on-device, maintaining privacy while adding an extra layer of verification beyond QR code scanning.
The entire backend runs on a high-availability Kubernetes cluster, ensuring zero downtime and automatic failover capabilities. This cloud-native infrastructure allows for seamless scaling during peak hours, automated deployment rollouts, and self-healing capabilities — critical for a healthcare solution where reliability is non-negotiable. The containerized architecture also enables rapid feature deployment and rollback capabilities without service interruption.
The solution includes remote device configuration capabilities, allowing Teemer practices to manage their check-in terminals centrally. Updates, settings adjustments, and monitoring can all be handled remotely, reducing IT overhead and ensuring consistent operation across multiple locations.
