The QR codes had to be strategically placed in front of each workstation (near each manufacturing process machine -mixer, coater, calender -and characterization spot -weight scale of the electrode before and after calendering, the thickness Gauges of the electrode before and after calendering) within our battery manufacturing pilot line so that the user could easily read and interact with the corresponding holographic panel (see video in Supplementary Material). Then, the headset brought up the holographic interactive panel corresponding to the associated QR code. An example of an interactive holographic panel displaying different information (slurry formulation, coating speed, calendering pressure in this case) is shown in Table . All the data entered by the user was automatically stored in the data server in real-time (cf.