I think they're awesome. They're an optical, better version of barcodes. I'm sure there's a bunch of specific industrial use cases. What's cool about them is the error correction so you can do stuff like this where the middle is carved out. There's also a standard way of sharing Wi-Fi networks as QR codes, so you could have a QR code of your home Wi-Fi network SSID/password to share with guests instead of having to dictate it to them.
I think they're awesome. They're an optical, better version of barcodes. I'm sure there's a bunch of specific industrial use cases. What's cool about them is the error correction so you can do stuff like this where the middle is carved out. There's also a standard way of sharing Wi-Fi networks as QR codes, so you could have a QR code of your home Wi-Fi network SSID/password to share with guests instead of having to dictate it to them.