In a small trades business, tools travel between trucks, helpers and jobs. A laser level rides in one van on Monday and another on Tuesday, and on Friday nobody is sure which truck took the hole saw kit.
Calling around to find a tool costs time, and a written loading list is the first thing to be skipped on a busy morning.
A barcode label on each tool and a quick scan while loading give you a dated record of which tools went on which truck or to which job.