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System for Location Tracking
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KR20170010280A
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An accessory device with the payment card using NFC and bluetooth communication
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KR20160084903A
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A control method for smart devices by using an identification data of t-money traffic card
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KR20130137516A
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A traffic card for charging through earphone jacks
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KR20120093639A
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Traffic card of noncontact type
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KR20110115899A
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User customized digital media player
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KR20090129974A
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Learning terminal apparatus and method for rfid tag
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KR20100092293A
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Traffic card and method for manufacturing the same
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KR20090077222A
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Learning terminal apparatus and method for rfid tag
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KR100758848B1
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Method of marking pattern to metal using laser
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KR20070106873A
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Rf tag assembly and watch for being equipped with it
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KR20070106874A
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Buying system able to exchange thought between participators and connected with an electronic bulletin board
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KR20070048860A
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Apparatus for charging/settling electronic cash and system for charging electronic cash including the apparatus
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KR20070095501A
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Watch having function of payment and balance check
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