Customer self-service point of sale (POS) kiosks in the nature of electronic checkout stations for point of sale transactions; customer self-service point of sale (POS) retail kiosks in the nature of electronic checkout stations for point of sale transactions having contactless product scanning and payment functions; contactless customer self-service point of sale (POS) retail kiosks in the nature of electronic checkout stations for point of sale transactions; Contactless customer self-servic...