How can you see erased ink from a recipt?

To see erased ink from a receipt, you can use a few techniques. One effective method is to apply heat, such as gently rubbing the area with a warm iron or using a hairdryer, which can sometimes make erased ink reappear. Alternatively, you can try using UV light, as certain inks may fluoresce under ultraviolet radiation. Additionally, using a specialized ink analysis tool or chemical reagents designed for document examination can help reveal erased writings.