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Thermal printers use heat elements to produce images on heat-sensitive paper and are used at ATMs and gasoline pumps.
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Wireless audio-output connections typically use Bluetooth technology.
Multifunctional devices (MFDs) are used to capture as well as play back recorded sounds.
Telephony, also known as Internet telephony, is the VoIP application that uses the Internet rather than traditional telephone lines to support voice communication.
Skype provides audio and video service that requires the installation of special hardware and software.
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