Backup Key Recovery enables you to recover software registration keys in case of a computer hard drive crash. The program extracts the information that is stored in the System32/config/software registry files. In order for the program to work, you must first recover this file from the hard drive of the crashed computer by connecting it as a secondary hard drive. Once the file is located Backup Key Recovery can extract all the keys that are found in it. The program currently supports more than 500 software packages.