It seems to me that making a smart home using QR code is the easiest way. There are QR code generators. QR code is not a new development, but only now people started to use it often. On the QR code generator website, you can customize the QR code for your printer. I have already made a connection to the Internet using wifi qr code. Each printer works and communicates via Wi-Fi. It didn't take long. The creation technology is fast and straightforward.