Answer the question: How technology help LUXURY brands collect offline

Answer the question: How technology help LUXURY brands collect offline data?

Just give me 2 or 3 ideas about this and each one 2-3 sentences should be enough.

Do not need any introduction, just give me the bullet points of your ideas and 2-3 sentences to explain them each.

You may need to use an example of LUXURY BRANDS (LV, Dior, Cartier, Gucci, Prada, Burberry) to answer the question.