How do you make scratch off system?

To create a scratch-off system, start by designing your cards or tickets with a printed area that features a prize or message concealed beneath a layer of opaque material. Use a mixture of paint and a binding agent, such as dish soap, to create a scratch-off coating that can be applied over the printed area. Once the coating dries, players can scratch off the layer to reveal the hidden information underneath. Ensure the scratch-off area is easily removable but still durable enough to withstand scratching.