I definitively walk differently in e.g., Birks, generic sandals, and generic slip-on closed-toe shoes.
Each one is quite consistent and recognizable, unfortunately, which puts me in a position of few options for working around this sort of technology. If you see me in Birks a decade ago, you’ll know me in Birks today without having to see anything above my hip.
I don’t disagree at all.
Phone number based programs are often relatively easy to do an end around - try the “coin deposit error message” phone number, or Jenny’s number in a local or major city area code.