What can String be used for? String can be used to trace any product, no matter how complex or extensive the supply chain or how many processes the product passes through. Your suppliers do not need to change their production methods or install complex and expensive hardware or software. They can simply record basic production information into String, using their own existing systems for batch or lot numbering. String will join this information with data from the rest of the supply chain to produce a unique production history for every batch of your product.