The product registration code is provided by the product manufacturer and is found on a product's packaging or, in e-commerce situations, emailed to the purchaser. When the software is installed, the product registration code is saved in the computer's registry.
Software manufacturers advise customers to contact them if they have lost their registration codes. In the case where many registration codes are lost due to a computer crash, for example, contacting each vendor can be a cumbersome and time-consuming process. A number of registration code recovery programs are marketed to address this problem, and many are available for free. Consumers can avoid many problems in recovering the product registration code by registering with the manufacturer immediately after purchase. If the product registration code cannot be found at that time, customer service personnel will be better able to help.