A QR code (abbreviated from Quick Response code) is a type of matrix barcode that contains information about the item to which it is attached.
In the case of the Coinme Wallet, the information attached to the QR Code is your Bitcoin Wallet address.
Instead of memorizing your Wallet addresses, you can scan the QR code and generate the address on a second device. Note: Each type of currency has its own wallet.
To access your QR Code Please follow the steps outlined in the following article: How Do I Find My Wallet Address