1. The user holds the Core device while performing guided activities.

2. Built-in motion sensors detect balance, march steps, long squat, and pose holding in real time. The screen provides simple instructions or timing feedback, while audio signals indicate stability, completion, or errors.
3. For sit-to-stand exercises, the Core connects with an additional seat-based module (see Sit-to-Stand Module) to detect transitions.
4. For the NFC game, the Core integrates a PN532 NFC module and functions as the scanning interface, registering card interactions and providing immediate feedback.
5. After each session, activity data is sent to the Hub for tracking and reflection.

Multi-Activity Support

Supports six types of activities.

Real-Time Audio and Visual Feedback

Provides immediate responses to guide performance.

Two Physical Form Factors

Offers alternative shapes to explore comfort, grip, and embodied interaction.

Wireless System Integration

Communicates with the Hub to log activity and update progress.