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SUMMARY:Anonymity properties of stored or transmitted data taken from Blue
 tooth scans - David Evans (Computer Laboratory)
DTSTART:20091103T143000Z
DTEND:20091103T153000Z
UID:TALK20750@talks.cam.ac.uk
CONTACT:Pedro Brandao
DESCRIPTION:*Slides "available":http://www.cl.cam.ac.uk/~de239/de_rhw_blue
 tooth_anon_talk.pdf*\n\nModern consumer wireless devices are increasingly 
 powerful\, making them attractive to use as wireless sensor nodes. At the 
 same time\, many use protocol suites such as Bluetooth which require devic
 es to reveal data that may make for unique device identifiers. This paper 
 explores this quantitatively through scans covering several thousand devic
 es in\ndifferent urban locations. In measuring the anonymity afforded by t
 he elements of a Bluetooth device profile\, we find that (i) attributes su
 ch as the device class are poor for linking sightings of the same device\;
  (ii) the device name can provide a surprising amount of anonymity but whe
 n it does not it can be a very effective key to link devices with\nindivid
 uals\; and (iii) frequently users exhibit privacy-adverse behaviour\, such
  as placing telephone numbers in device names or using nicknames that are 
 statistically rare.\n\nThis is joint work with Dr. Robert Warren of the Un
 iversity of Zürich and appeared at the SecureCom 2009 symposium\, a part 
 of IEEE PASSAT.\n\n*Also*\n\nIf time permits and the vibe is right\, I'll 
 also present my talk from RFID Europe:\n\n_Inexpensive and Effective Urban
  Infrastructure for Measurement and Communications_\n\nIDTechEx's summary:
 \n* Many applications want for infrastructure and bespoke installations ar
 e expensive and can be difficult to justify\n* Lamp posts are plentiful an
 d are an appealing candidate for hosting a variety of technologies\n* Our 
 experiences with traffic counting and Wi-Fi communication\n* Interest from
  local authorities and transport providers because of the promised value f
 or money
LOCATION:Room FW11\, Computer Laboratory\, William Gates Building
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