RFID

Learn in the textbookSerial and Short-Range Wireless Interfaces

DefinitionRFID is a technology that reads and writes identification data stored on an IC tag (ICタグ) from a distance, by radio and without contact.

ExplanationAn IC tag consists of a tiny IC chip and an antenna, and it answers when it receives radio waves from a reader/writer (リーダライタ). The tag holds data that identifies each individual item, such as a product or a parcel.

AnalogyIt is like a reader calling out by radio to an electronic name badge stuck on a library book and having it answer with its name.

Memory hookShort for Radio Frequency IDentification: you identify (ID) things by radio.

Learn in the textbookInformation Systems for Distribution and Retail

DefinitionRFID is a technology that uses radio waves to read tags attached to items without contact, identifying the items automatically.

ExplanationRFID consists of a tag attached to an item and a reader that communicates with it. A tag without a battery answers by using the reader's radio waves as its power source. Some types of tag can also have data written to them later.

AnalogyIt is like a reception desk that, instead of checking name badges one by one, reads the badges of everyone entering the room in one go at the door.

Memory hookShort for Radio Frequency IDentification. Radio frequency means radio waves, so read it as telling IDs apart by radio.