A connected worker platform is software that guides each shop-floor worker through the steps of a job on a screen, and records that every step was done, and by whom. The screen can be a tablet at the workstation or a screen fixed to the machine.
Without such a platform, the steps of a job are written on paper, and the worker ticks them off. Paper is easy to lose, and nobody knows until later if a step was missed. A connected worker platform shows one step at a time, with a picture or a short video. The worker confirms each step. For some steps the platform asks for a value, such as a measured size.
The platform is useful in two more ways. It trains new workers, because they follow pictures and videos instead of waiting for a senior worker to explain each step. And it can force the correct order: step 5 does not open until step 4 is done and measured. This differs from the MES. The MES decides which job a worker should do, and the connected worker platform guides the worker's hands while the job is being done.
Imagine a worker who joined a gearbox plant in Coimbatore last week. At the cover-fitting step, the screen plays a ten-second video that shows how to seat the gasket. The worker then tightens the cover bolts with a torque wrench that is connected to the tablet. A torque wrench measures how hard a bolt is tightened. The platform will not open the next step until every bolt is within its limit, so a bolt that was left loose cannot be passed by mistake.
All of this is saved in the MES. If a customer finds a fault in a gearbox later, the record shows who assembled it, on which day, and what torque each bolt received. That record is what makes traceability possible for work done by hand.
The platform is usually sold with an MES, and it works best with machine monitoring on the same floor. The same record helps the quality management system, which regulators audit, and the industrial IoT data of the plant.