We have already come quite far in this respect in Norway, and social patterns and cultural codes have changed significantly over the last generation.

CNN: Want more female execs? Sort out the household chores

While an illustrated alphabet in rhyme, the shorter catechism, and selections of prayers and Bible verses remained the unchanging core of The New-England Primer, variations in the text from edition to edition were common and became a barometer of changing cultural codes and priorities.

NPR: Excerpt: 'Minders of Make-Believe'

In Leicester QR codes are being used to promote the cultural quarter and National Space Centre.

BBC: Visit England pilots QR technology for tourism

Mudiyettu serves as an important cultural site for transmission of traditional values, ethics, moral codes and aesthetic norms of the community to the next generation, thereby ensuring its continuity and relevance in present times.

UNESCO: Intangible Cultural Heritage

Harlem was then the unofficial capital of Negro America, with its own codes of behaviour and refinement, its own high society and cultural elite.

ECONOMIST: Harlem's days of glory