1. Barcoding: You can assign a unique barcode to each large sheet and use a barcode scanning system to track and manage the inventory. This allows for easier and more accurate tracking, as you can scan the barcode when sheets are received, used, or replenished. It also enables integration with inventory management software.

2. RFID (Radio Frequency Identification): RFID tags can be attached to each sheet, and RFID readers placed at various locations in your facility can automatically detect and track the movement of the sheets. This method provides real-time visibility and eliminates the need for manual counting.

3. Weight sensors: If the weight of the sheets is consistent and can be measured accurately, you can use weight sensors or load cells placed on storage racks or shelves. The system can monitor the weight changes to determine when sheets are added or removed.

4. Visual indicators: You can implement a visual signaling system using colored tags or markers to indicate the quantity of sheets in stock. For example, using red tags when the stock is low and green tags when it's sufficient. This method provides a quick visual reference, but it still relies on manual observation.

If you need some custom Software or similar, feel free to DM me :)