Create unique feature for ORB
My goal is to correctly feature-recognize some specific simplistic logos in photos, having a total of 20 different possible logos. My attempts so far using ORB are not going so well so I am thinking of aiding the process by adding a unique feature to the logos which would (hopefully) always be detected and matched almost perfectly (very low distance). Note that I mean having new logos which would have this feature, such as the opposite-corner squares in a qr-code. My understanding is that that's the basis of QR-codes, barcodes, etc., i.e. a standard visual 'thing' that defines the space into which to recognize data. Of course, actually using a qr-code would be the simplest way but I cannot do that. In other words, I want to try and create my own visual 'code' to work with ORB.
Any tips on how to make this 1 feature?
EDIT. An example of one of the logos: 
To further clarify: the idea is for people to take a picture of some objects and the software can then identify these objects, given the objects have one of these 20 tags on them. I can slightly modify these tags, i.e. add this unique feature, but they need to look pretty much the same.
can you show one or two logo? Have you try something like digital watermark?
@LBerger I have edited my post; hope this answers your questions.
you can try something like this
so in other words, try template matching(?). Yes, that's top of my list, though I feel bad abandoning everything i wrote for ORB. thx for the link!