
CSIE54600 Pervasive Computing Lecture02: Overview
Note 23
RFIDs (“Smart Labels”)
z Identify objects from distance
z small IC with RF-transponder
(batteryless)
z ~1m
z magnetic field (induction)
z ROM or EEPROM (writeable)
z ~100 Byte
Pervasive Computing Overview 44
z Cost ~$0.1 ... $1
z consumable and disposable
z Flexible tags
z laminated with paper
z PDAs, mobile phones, and wireless Internet
appliances become request devices for
Bar Code Reader
n
orma
on
z find information
z order products
z ...
Pervasive Computing Overview 45
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