Yes Jaeseok, that is perhaps doable, but as I just added to the article, larger solutions require larger resources and consensus. To get the other stores on board will require more work, and there will be the added complexity of the fact that even more stores might pop up (and that different complexes have different stores). Perhaps the shopping complex operators could solve this for everyone if they took matter into their own hands, but the cost sharing model that will need to be in place for such an arrangement will also be much more complex.