Retail shelf monitoring system and method

An automatic inventory shelf monitoring system for monitoring products' inventory on a shelf unit (300), comprising:

• a) a digital image capturing system designed to capture an image of all product on all shelfs within said shelf unit ((300));
• b) a transportation system designed to move said image capturing system along said shelf unit (300);
• and
• c) a computerized system comprising a processor and a memory,
• wherein:
• said transportation system is mounted on said shelf unit (300);
• and
• said computerized system is designed to receive images taken by said image capturing system, analyze same, determine the number of units and/or the exact location of each product residing on each shelf of said shelf unit (300), and providing an output thereof.