Apple has unveiled an auto-save system as part of an upgrade to its operating system (OS) designed for the Macintosh.
Apple is riding high as it switches to Intel chips
The Time Machine is a new feature in its forthcoming OS release, called Leopard, and lets users set auto-saves to hard drive or to online servers.
Files and folders can be backed-up and it also lets users search for files overwritten or altered in the past.
At an event in San Francisco, Apple said only 26% of Mac users currently backed-up files.
A number of third-party firms currently sell auto-save programs, but just four percent of users use them.
Time Machine will let users retrieve old data, such as photos or documents, simply by moving a slider back in time within programs such as iPhoto.
A recent survey in the UK revealed that one-third of digital camera users are not backing up their photographs.
Mr Jobs also used the conference to unveil a replacement for the firm's high-end computer, the Power Mac.
A new machine called the Mac Pro and aimed at the professional end of the market is now on sale, offering dual core CPUs up to 3GHz in power.
Apple has now completed its transition of all its machines to Intel processors, ending its relationship with IBM.
A specific date for the launch of Leopard was not given but it is thought to be available in Spring next year.