In order to improve the m-commerce experience, we integrated a QR Code and Bar Code reader as part of the Xloudia SDK.
Code readers read code seamlessly in parallel to image recognition. There is no button to press, no alignment to match. When holding a product in hand, your smartphone searches for images wherever they are: Brand, Logo, QR or Bar codes. The first of those to be recognised is taking the lead.
It makes the user experience even more compeling and smooth.
Of course you can decide to separate the processes to make it independent or attached to a button.