In recent years, point of sale systems have undergone significant changes and are very advanced compared to their humble beginnings. Chip credit cards are now the norm (more on how to incorporate chip cards in your spa) and digital transfers of funds without a card or check are happening daily. Applications and subscription type services are also becoming more popular. These services store payment info to ensure instant gratification. If someone from the past were to experience how we pay for things now, I’m sure they would not even recognize what we call money today. Here's a helpful overview of the evolution of point of sale systems from Booker to better understand these systems and where they came from.