Whilst there is currently there is "no established standard method for conducting a computer forensic examination",[27] the employment of digital forensics good practice and methodologies in the investigation by computer forensics experts can be crucial in establishing defendant innocence or guilt.[28] This should include implementation of the key principles for handling and obtaining computer based electronic evidence - see for example the (ACPO) Good Practice Guide for Computer-Based Electronic Evidence . Some practical steps should potentially include the following:-