Metal detection today remains the backbone of food safety compliance for the majority of the industry, but especially in the chilled and frozen food sector. Specifically, simultaneous multi-frequency scanning is making it much easier for manufacturers to identify hard-to-find metals in food products with high conductivity (so-called "wet" products). These products may, literally, have high water content. Additionally, above-average conductivity may also be linked to high levels of minerals, particularly salt. These can be found in products such as bacon, or ready meals.