Differences

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--- en:e_r [2016/07/08 14:21]
127.0.0.1 external edit
+++ en:e_r [2019/01/08 17:59]
sypark1
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   * [[restart|Restart]]: The act of switching off and on by force due to an error related to program execution during device operation. \\
+  * [[rf|RF(Radio Frequency)]]: The frequency used to recognize information at close range or from a distance.
+  * [[rfid|RFID]]: Short for Radio-Frequency Identification, this is a technology whereby IDs are recognized using [[rf|RF(Radio Frequency)]]. This technology allows you to store information in an [[rfid_tag|RFID Tag]] composed of an antenna and a chip and identify information by reading it with an RFID reader.
+  * [[rfid_tag|RFID Tag]]: An electronic tag attached to an object such as a card in order to store the unique identification information of a person or object. An RFID reader wirelessly recognizes the information stored in an RFID tag using radio waves. An RFID tag generally consists of a small processor, a memory, a small antenna, a battery, and so on. RFID tags are divided into various types depending on their capability to read/write, the presence of a built-in battery, and the [[rf|RF(Radio Frequency)]] band, etc.
   * [[ridge|Ridge]]: A ridge is a curve that represents a fingerprint, consisting of a continuous curve, an end point where the ridge is cut midway through, and a [[bifurcation|bifurcation]] where two ridges meet, which are called [[minutiae|minutiae]].