Developed by Guanjie Audiovisual Technology (Shenzhen) Co., Ltd., "菲家" is a user-friendly app based on location services, primarily designed to support Philips smart terminals. This app offers various key features for users of Philips smart terminals:

1. Precise Location Services: With multiple accurate positioning capabilities, users can track the specific routes and directions of the wearers (children, elderly) through trajectory queries.

2. Safety Protection: Users can set safe zones, and the app will provide notifications when wearers enter or exit these areas.

3. Voice Chat: Enables users to have micro-chats with wearers through the app and smart terminals, facilitating two-way communication.

4. Photography: Wearers can take photos independently and send them to family members. Families can also remotely capture photos to view the wearer's surroundings.

5. Audio-Visual Content: Tailored audio and video content based on the users of smart terminals.

6. Additional Features: Set alarms, disable during class hours, check phone bills and data usage.