bruce miller-digital lib
TRANSCRIPT
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RFIDR Bruce MillerUniversity of California, Merced
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Radio Frequency IDentification
R-F-I-D (also are-fid)
automatic identification method tostore and remotely retrieve data fromtransponders
RFID tag (transponder): contactlessintegrated circuit that may be read
remotely
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Widely used
inventory tracking
drive through toll booths (Fastrac) passports
door lock systems
car keys
library book management andsecurity systems
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How RFID works
RFID tag
reader
computer
12
3
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Library book check-out
book and borrower card
scanner
library system
12
3
4
check-out record
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Library RFID
check-out and check-in
easy self-check
exit security
record of item use in library
scan when re-shelving
accurate record of overall use
no guess collection management
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Many types of systems
active or passive
long or short read range
secure or non-secure
one use or repeated use
Do not assume that functionsapply to all systems
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Focus: library systems
13.56 MHz
passive
computer chip and antenna
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Laws of physics
RF signal causes inductance inantenna sufficient to power
transmission from chip
passive 13.56 MHz cannot be read
from more than 1 meter
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RFID tags on school children
elementary school Sutter, California
ID cards for each student
readers in doorways
automatic attendance record
without parental permission
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Outcome
American Civil Liberties Union
Electronic Frontier Foundation
California Senator Simitian
Senate Bill 682
would prohibit RFID for all Californiagovernment operations
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SB 682 would prohibit RFID
card keys
Fastrac drive through toll systems
hospital patient tracking
library cards
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Why?
stalker captures library card ID #
uses RFID readers to track movement
false assumptions based on confusionre specific technology
presumes ability to hide many RFID
readers connected to unified system information gained is meaningless
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Why?
government agent captures librarycard ID number of suspect
later scans crowd at demonstrationand records suspects
false assumptions based on lack of
knowledge passive 13.56 MHz has 1 meter read
limit
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Technology paranoia
be wary of social issues
understand how technology works
be articulate in stating intended uses
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Library book RFID data
library system identification number
same as bar code number
could add author, title, etc.
would require different system, e.g.,
active (battery in book RFID tag)
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Library borrower card
library system identification number
essentially random
no personal information
easily change ID number if card isstolen
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Beware of standards
library systems typically use 13.56MHz passive RFID
data format
checkout status on RFID server
checkout status passed to library systemserver
technically possible to migrate butmight require substantialprogramming
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Limited RFID library use: why?
RFID tags in books
research libraries: large collections
RFID library cards
public libraries: many users
Expense means very few libraries can
justify RFID library cards and books
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Unique opportunity
University of California, Merced
no security system
new book collection
small user base
positioned to understand details of technology
implications of SB 682expert by default