Olga Kisseleva is an established Russian artist (with a Ph.D. from St Petersburg University). Her current exhibition at the Abbey Maubuisson, France features QR codes that lead the visitor to a large tag-sculpture, mosaic mirrors and black plates.

The QR code in this mosaic mirror (image via poptronics )when decoded reads “L’ideologie, c’est ce qui pense a votre place” which is a quotation from Jean-François Revel, one of the leading French philosophers of the 20th century. In English it translates as “The ideology is what you think”.
Actually if I may, I’m fluent in French and what it actually says is “ideology is something that does the thinking for you” (or instead of you). Subtle difference but completely different meaning.
Thank you Smiler, apologies to all.
Glad to help.