The problem
Hardware doorbells solve one problem and create three more
Traditional smart doorbells are often sold as the default upgrade for every home, but they come with tradeoffs that matter in everyday life. First, you buy hardware before you know whether the setup fits your property. Second, you often deal with drilling, wiring, charging, or finding the right place to mount the device. Third, you are putting another camera on a wall when the real need may simply be to know who has arrived.
That mismatch is strongest in apartments, shared homes, rental properties, and homes in places where stable electricity, permanent installation, or maintenance support are not guaranteed. Darwaza works for those environments because it changes the model. The thing at the door is just a printed QR code. The intelligence stays on the phone that already belongs to the homeowner or family.