What system is used to identify which technician is in possession of a tool?

The chit system is utilized to track which technician has possession of a tool at any given time. This method involves the use of a small slip of paper or electronic record, known as a "chit," that is assigned to a tool whenever it is checked out for use. This chit contains vital information such as the technician's name, the tool's identification number, and the date and time of checkout.

By utilizing the chit system, organizations can maintain accountability and prevent tools from going missing or being misplaced. This system ensures that there is a clear record of who is responsible for each tool, facilitating easy returns and maintenance tracking.

In contrast, the other systems listed do not specifically serve the purpose of identifying the relationship between technicians and individual tools to the same extent. The tag system might involve physical tags but does not track individual technician assignments effectively. The inventory system may keep track of tools as a whole, but it lacks the detail of assigning tools to specific individuals. The barcode system is useful for scanning and tracking items in general, but it does not inherently record which technician has each tool unless combined with an additional tracking mechanism.