Here's a breakdown of how it works and its key features:

How it Works:

1. QR Code Sticker: Instead of a physical doorbell unit with a camera, Nekinsan provides a weather-resistant QR code sticker that you place near your door.
    
2. Visitor Scans: When a visitor arrives, they scan this QR code using their smartphone. They can use the dedicated Nekinsan app or any standard QR code scanner (like Google Pay or Paytm).

3. Communication Initiated:

   • With Homeowner's Internet: If your (the homeowner's) smartphone has an internet connection, scanning the QR code initiates a video call to your Nekinsan app. You can see the visitor through their phone's camera, but your own camera remains off by default for privacy unless you choose to turn it on. You can then have a real-time two-way audio and video conversation.
      
   • Without Homeowner's Internet: If your phone is offline or has no internet connection, the system automatically switches to an audio call. This call is connected through a virtual number to protect your actual phone number.
      
   • No Visitor Smartphone/Internet: For visitors without a smartphone or internet access, the sticker also displays a helpline number. They can call this number, and the system will connect them to you via an IVR (Interactive Voice Response) system, again using a virtual number for privacy.

Key Features and Advantages:

• Privacy-Focused: A major differentiator. There's no continuous camera feed at your door, and your phone number is masked with virtual numbers, ensuring high privacy.

• Extremely Easy Installation: No wiring, no complex hardware, and no electricity needed for the "doorbell" unit itself. You simply stick the QR code. This makes it ideal for renters or anyone who wants a hassle-free setup.
   
• Cost-Effective: Generally much more affordable than traditional video doorbells, as it leverages existing smartphone technology. A pack of two "Smart Doorbell" stickers is typically priced around ₹699 in India.

• Works Without Home Internet (for audio calls): This is a significant advantage in areas with unreliable internet, as visitors can still connect via audio calls.

• Visitor Logging: The app logs interactions, including a photo of the visitor (captured when they scan the QR), date, time, and location (using GPS).
   
• Emergency Helpline & SOS: Includes an SOS feature within the app to quickly contact emergency services or pre-designated contacts.
   
• Remote Communication: You can communicate with visitors from anywhere with your smartphone.
   
• "Made in India" Product: Nekinsan is an Indian company.

Limitations to Consider:

• Relies on Visitor's Smartphone: The primary video communication relies on the visitor having a smartphone and either the Nekinsan app or a general QR code scanner. While audio calls are an option for those without a smartphone, it's not a true "camera at the door" solution.
   
• Not a "Camera" Doorbell in the Traditional Sense: It doesn't offer continuous live monitoring or motion detection features like conventional video doorbells. Its security features are more focused on logging visitor interactions.

Who is it best suited for?

• Privacy-conscious individuals who are uncomfortable with a permanent camera feed at their door.

• Renters or those who want extremely easy and temporary installation.

• Budget-conscious buyers looking for an affordable entry into video communication at the door.

• Homes with unreliable internet where the audio call fallback is valuable.

• People looking for a simple video/audio communication solution without the need for advanced security monitoring features like motion detection.

Nekinsan Smart Wireless Video Doorbell offers a unique, privacy-centric, and highly accessible approach to home communication by cleverly utilizing QR code technology and existing smartphone capabilities.