Lumex is a cloud-based point of sale (POS) and retail management system for small and mid-size stores in Argentina. It brings together sales, inventory by branch, cash register control, customers and accounts receivable, electronic invoicing with ARCA (formerly AFIP), Mercado Pago payments and TiendaNube sync. The POS works with barcode scanners, supports weight-based sales with scales and keeps selling offline. Lumex is used by grocery stores, kiosks, clothing and shoe stores, hardware stores, phone shops, pet shops and distributors.