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Technology has done so much good to us humans, although there are some that geared towards the negative effect. Take for example document imaging. It used to be that the only way to produce a copy of a document is by a xerox machine (which has been already in the dictionary for years) or what is generically called photocopier. Scanners came to exist later and so the copier became a lot smaller. Handheld scanners even came to be although not as stable especially if your hands are shaking. Now, 3-in-1 peripherals are common: scanner, fax machine and printer all in one. Life has become a lot easier.