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are plastic credit cards but they have a higher storage capacity and an embedded processor. Is inserted into a smart card reader. Are frequently used in bank and credit cards, and related electronic cash systems.

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they are often considered relatively secure, it is possible to purchase stripe writters. This can be done to create a clone of an existing bank card. The clone card could still be spotted by a person because it would lack the colours.

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some frecuent traveller cards feature a magnetic stripe on the reverse side and store a samll amount of data wich is read using a magnetic stripe reader.

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uses a laser to shine light onto a barcode level, are most commonly used on items in supermakerts. UPC is one standard wich defines how a barcode stores information.

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joysticks and game pads are two common input devices used by game players with many different configurations and a variety of buttons and features.Nintendo s Wii games console has a motion sensor that interpret the users movements.

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is similar except that the user speaks commands in the computer but there are not always useful in busy, noisy, work enviroments.

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allows data to be input into the computer, many laptops have microphones used with video conferencing and Voice over. This lets users talk. To recognise the words being spoken, voice recognition software is requiered. The software breaks down the recorded parts, tries to match them with the sounds of letters and words.

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allow users to interact with computers using their hand or a specially designed pen called stylus used at airports. They are also useful on mobile phones, operating systems now incclude support for multi-touch.

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are common in input devices or laptops, there is ussualy not much space for a mouse. as well as moving the pointer by tracing their finger across the touch pad. Multi-touch pads allow more complex actions to be perform using several fingers

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consists of a relatively large ball wich is fixed in place so that the user can spin it about, controling a pointer on the screen.They do not move across tghe desk, some early laptops had trackballs and also mobile phones. It can be much more usable than a mouse for people with movement difficulties because it only requires the movement of the fingers

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is a standard pointing device on most desktop computers, it has two buttons and many also have a scroll wheel in the centre to perform tasks. some have additional buttons in the middle or around the side.

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soft keyboards can be useful in security conscious enviroments .

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they can be more accesible than regular keyboards, the language of the keyboard can be changed much more easy than with a hardware keyboard. they are also useful for PDAs and smart phones

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is a keyboard that is represented by a series of buttons drawn on a monitor or screen , uses a combination of hardware and software

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Laptop computers often feature a special function key to control features like the sound volume.

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with additional hotkeys for opening common application . It includes a Windows Key used to perform specific shortcuts

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use a completely different layout wich is claimed to increase. There are also variations that swap a small number of keys

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most computers users have keyboards with the standard keyboard that is present on virtually all laptop and desktop computer.

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are items of hardware that allow entry of information into the computer, may be text, images, sound or even movements. Some are specially desing to help users with disabilities, helping to create equality of access.