RH247 - TABLET

RH247 Ponto transforms the Positivo Vision TAB 7 into a 100% offline biometric time clock with facial recognition. No physical contact, passwords, or cards — ideal for corporate environments seeking hygiene, security, and precision in time tracking.

HOW IT WORKS
The tablet is placed at the company entrance with the front camera active. When the employee positions themselves, their face is instantly recognized, and the time is recorded with date, time, photo, and GPS. The data is automatically synchronized with the RH247 server when there is internet access.

ON-DEVICE FACIAL RECOGNITION
• FaceNet + TensorFlow Lite: 512-dimensional embeddings processed 100% on the tablet, without relying on the cloud.

• ObjectBox HNSW: vector search in milliseconds among hundreds of registered faces.

• Backward-compatible dual pipeline: two pre-processing algorithms ensure that faces registered before updates continue to be recognized.

• Adaptive profile: automatically detects hardware capabilities (LOW/MEDIUM/HIGH) and adjusts GPU, security features, and search parameters.

ANTI-SPOOFING SECURITY (MULTILAYER)
• Anti-spoof CNN: convolutional neural network that distinguishes real faces from photos, videos, or masks — always active on all devices.

• Strict match: compares the frame embedding with ALL saved embeddings of the employee, not just the nearest neighbor.

• Multiple consensus: requires minimum similarity to accept recognition.

• Configurable threshold: administrator adjusts the rigor between 0.65 and 0.80.

• Passive liveness: frame analysis for natural movements (MEDIUM+ profiles).

FEATURES
• Simplified facial registration with automatic embedding generation.

• Employee import from the RH247 API.

• Automatic synchronization via WorkManager with periodic fallback every 15 minutes.

• Local HTTP server (LAN) for browser-based administration.

• Backup and restore of settings, employees, and time clocks.

• Support for multiple branches and companies.

• Standby mode with automatic activation for energy saving.

OPTIMIZED FOR LIMITED HARDWARE
Designed specifically for the Positivo Vision TAB 7 with a heap of ~18 MB. Block synchronization, adaptive memory thresholds, and no aggressive System.gc() calls ensure stable operation even on entry-level devices.

PERMISSIONS: Camera (frame capture), Location/GPS (time clock coordinates), Internet (synchronization), Storage (backup and photos).

TARGET AUDIENCE: Companies using RH247 and seeking secure, contactless, and 100% functional offline time clocks on accessible hardware.

PRIVACY: All facial recognition is processed on the device — no images or biometrics are sent to external servers during identification.

Compatible with Android 8.0+.