Put-to-Light:

 

A technique similar to pick-to-light in which lights direct workers to place SKUs into shipping cartons or totes after they have been batch-picked. For example, a picker has 10 items of a given SKU, and the lights indicate to put one item in carton 1, two in carton 3, and so on. The “puts” are confirmed by pressing a light on the location display, making the operations “hands-free.” This has become increasingly popular for e-commerce order processing using put walls, where items are put with light direction on the front side of the wall, and then packed from the back side of the wall once all puts are complete. Prior to that, put-to-light was most common in retail applications where items were put into totes for specific stores.