● Simple registration/login· You can sign up and log in with just one click.· Easily log in and check your sitting posture in real time.● Easy and fast chair linking· You can use it in conjunction with the habit chair with a few clicks.· Easily and quickly link your chair and receive real-time posture correction service.● Check and correct your sitting posture in real time· You can immediately check how much you sat today.· Whenever your posture is bad, we will notify you so you can correct it in real time.● Renif Customer Center· Phone: 02-6956-0429[Service access permission information]Select access rights- Alarm: Alarm: Permission to deliver notifications to users- Location information: Permission for Bluetooth and Wi-Fi communication- Nearby device: Permission to communicate with chair sensor- Camera: Permission to register equipment QR code when registering device