First of all scan the QR code.
Then can search and show the QR in quick and easy because QR note bundle all QR codes.
Support for various way for show the QR code.
On the Home Widget.
- It is useful if you want to show the same QR code again and again such as your website or SNS account.
In Notification bar.
- It is Useful you want show the QR code in a seconds only one time. Such as reception.
On the your Wear OS device.
- You do not have show your smartphone and you do not have take out your smartphone from your bag.
It is Useful if you use the Wear OS device.

Note
Copied QR code is not perfectly equal original because Copier QR code is encoded from text after Original QR Code decoded to text .
It use at your own risk.
It can display only QR cord.
It can read some format such as PDF417.

You need install this app via play store on your watch device when you use Wear OS or Android wear 2.0.
You can found this app how run to play store and swipe down to area of Apps to your phone in your watch device if you installed this app to your phone device.
Or you can install this app to your wear device via Play store on the browser.