Now is the time when you must take a step forward to keep your business up-to-date. In the present scenario, when everyone and everything is going contactless, almost all users are depending on the online market and sources to fulfill their requirements. Does not matter, whether you have an existing business or just started a new one, it is important to adopt proven marketing strategies to let consumers (users) have access to your service/product. So, actually we are here discussing codigos QR (QR codes) . As we all know very well, QR code is a quick response code that can be found on the product ’ s packaging, on business cards, resumes, et cetera. These codes allow users to access all the necessary details and information that must be passed on to them. These codes are two-dimensional versions of barcodes, which can store a wide variety of information. This coded information can be decoded by scanning the code images with a compatible application using the camera of mobile devices