Remote access most often corresponds to communication with a computer from a remote location or facility through a data link. There are many programs that allow you to access information on another computer remotely. In fact, there are even some remote access programs that will allow you to see a "copy" of the other computer's desktop and take control of it. However, programs of this sort are often not used due to security concerns. Most often remote access of another computer involves connecting through a computer on the same network to a shared folder or drive. This is a relatively safe method of remote access as you can choose what files other people can see and you can also choose what control they have over the files. Remote access through a network is usually secured to connections outside the network as most companies have hardware firewalls to protect the entire network.
Remote access can be very handy if you wish to share files and research amongst friends and coworkers; however, one must always be wary of compromising your own computer's security through remote access.