The primary issues facing users when deciding to dispose of a computer are the risks associated with sensitive data falling into the wrong hands and unsafe disposal, leading to environmental hazards. The first step to disposing of a computer is to make a back-up of the data stored. Next, the data should be completely deleted and eliminated from the computer memory to avoid potential misuse of sensitive information such as passwords and account numbers. A simple formatting of the hard drive erases the data. For a more thorough deletion, there are E-waste collection agencies which specialize in this. For residents of Auckland city, computer disposal can be facilitated by such E-waste collection agencies, in Auckland itself. In case you hand over your old computer to them, they erase the data (data destruction process) and can also provide you with a certificate-of-destruction on request.