The retail industry is increasingly focused on increasing sales and revenue through radical innovation and digital transformation. Frost & Sullivan's Start-Up Tracker is a resource to help the ecosystem participants identify solution providers with offerings that match industry challenges. The Start-Up Tracker provides a rich database of start-up and niche players that have the capabilities to transform processes in retail and add value to the end-user. These companies were selected based on the Frost & Sullivan best practices database, in addition to secondary research on retail tech ecosystem mappings and rankings worldwide, such as the IoT Retail Market Map from CB Insights and other regional Retail Tech mapping and rankings. A list of start-ups focused on retail IoT was made by region, including different segments: sensor-based analytics and marketing, indoor mapping, smart dressing rooms, and service robots. Frost & Sullivan conducted detailed primary interviews with start-ups that are standing out in beacon-and sensor-based analytics and marketing in different regions to generate a competitive profile and understand relevant developments, strategy and value proposition. Beacon-and sensor-based analytics and marketing was chosen because it is the segment with the most innovative solutions in the digital retail industry.