Date: 20/10/2021 ## Summary Self-service registers installed throughout Iceland (Bonus, Kronan) - Why? - Shorter lines - Better use of human resources - Reduced labor cost ### Formulation #### Data - Cost of register: $30,000 - Cost of employee $4,000/month - 1 employee per manual register - 1 employee per self-service area - area considerations Minimize monthly cost of checkout process #### Constraints - space - minimum registers - Customer satisfaction - 33% of registers must be manual #### Results - In store's interest to move completely to self-service - but need to consider customer satisfaction - customers get used to self-service as time passes - added progressive term to model this - Less than 8 month pay off time for each register ## Discussion Effect of store size? - More likely to have larger orders? - Too lazy to do self-service? #OPTI #optimization