25 November 2005
ID card scheme tackled at London University
John Daugman, Cambridge-based pioneer of iris recognition told
an audience of sixty security professionals, lawyers, and privacy
advocates last night: “it is Orwellian to base a political
campaign on disinformation”. Daugman had in his sights the
LSE report, published in July, critical of the UK government’s
identity cards scheme.
Simon Davies, Visiting Fellow, Information Systems Department,
LSE, also in attendance, conceded that the iris recognition sections
of the original report were in error, and are being excised.
But he re-stated his main objection “to a creeping communitarianism
– where the common good, as defined by the government takes
precedence over the privacy rights of the individual”.
Daugman and Davies were speaking at a seminar at the University
of London’s Institute of Advanced Legal Studies on understanding
the technological and legal issues surrounding the UK government's
proposed introduction of ID cards.
The other speakers were Stephen Harrison, Deputy Director of theID
Cards Programme, at the Home Office; Professor Fred Piper, Information
Security Group, Royal Holloway, University of London; and Gareth
Crossman, solicitor, and Director of Policy at Liberty.
Dr Daugman described the LSE report as “one of the most error-prone
around. It repeatedly confuses the iris with the retina; it says,
falsely, that glaucoma and cataracts are barriers to iris recognition;
and it erroneously asserts that pregnancy and medication affect
accuracy also”.
In fact, he continued, one can “allow one quarter to one
third inaccuracy on the data bits, and still get staggering accuracy
of identification”. For example, he said, even with 26% mismatched
bits you still get a misidentification of one in 50 billion iris
cross comparisons.
However, he conceded, “iris recognition will always be an
opt-in technology, and that is its Achilles Heel”.
Enabling legislation
Stephen Harrison, on behalf of the British Home Office, began his
talk by stressing, “this is enabling legislation, given context
by other legislation – such as that on data protection.
"Delivery of the scheme will be based in the UK passport service
– it won’t be a new agency”, he said.
Harrison argued that the card will play a role in combatting terrorism.
“When terrorists are run down, they have all sorts of false
identity documents. They obviously find them useful for something”.
And, in terms of combating crime, he pointed out that the UK has
900,000 unmatched scene of crime fingerprints on record.
Moreover, he said, “there will be efficiencies in the interaction
of citizens with public services, and that will be even more the
case as more services go online”.
He said that there are constraints on the information that can
go on the register – for example, it can’t expanded
to include medical information.
"As for the National Identity Register, it is a legal construct
– whether it is one, two or 20 databases will be left to future
procurement and development processes”.
However, he stated that the police, and security services will
be able to access data without individual consent, "and you
will not be allowed to know about that. Other organizations could
be added to that, but that will take further parliamentary approval”.
Enrolment the big issue
Fred Piper, from Royal Holloway commented that John Daugman’s
“statistics are all about iris scans, but there are other
biometrics which are not so accurate. I’m a cynic about biometrics
in general.
Piper asked: “has the government ever procured any security
project on this scale? I don’t believe it has.
"But enrolment is the big issue. That process merely confirms
that the person registered is the person identified.
Until there is a solution in place we cannot assess the security
of it.”
However, Professor Piper cautioned those who raise the spectre
of database insecurity that “the mere existence of a database
is not, on its own, a make or break issue. Experian and Equifax
hold and secure highly sensitive financial information. It can be
done”.
But, regarding smart cards he made two points to ponder: “the
more tamper resistant smart cards are, the more expensive they are;
and the card also has to authenticate the terminal!” Not trivial.
Positive case not made
Garry Crossman, from Liberty eschewed the technological, and targeted
the principle of the card. “The government needs to prove
the positive case for this, and it hasn’t.
"It needs to show that the need to introduce the card over-rides
objections to it. And it hasn’t”.
He pointed up the danger of function creep. “The Second World
War scheme in the UK was for three things originally: national security,
conscription, and food. By 1950 it was up to 39 uses!”
There is also the danger that the card will be used in a racist
manner, he said. “In all European countries where you have
ID cards they are used as a method of internal border control”.
But his main point lay in the difference between the legal traditions
of the UK as opposed to continental Europe.
"We have common law in the UK, and civil law in Europe. So,
yes, they do have identity cards, but they also have stronger privacy
traditions encoded in law.
"The ID card scheme will change our relation to the state
in a fundamental way. Information will be passed on unless there
is a reason not to do so.
"As for terrorism, those suspected are known to the police
and security services anyway. And, in terms of crime, identity is
just not an issue".
He added that the government was not putting its best case forward.
“They are not selling the benefits of the card in terms of
promoting efficiencies in interactions between the individual and
public services”, he said.
Speaking from the floor, and in a personal capacity, Geoff Llewellyn,
of Siemens Business Services, said: “either you buy into the
value of a modern, globalized, interconnected world or you don’t.
If you do, then an ID card will be a useful component of that world”.
The discussion was chaired by Stephen Mason, Stephen Mason, seminar
chairman; barrister, Senior Research Fellow, Institute of Advanced
Legal Studies.
This discussion was organized by the Society for Advanced Legal
Studies, in association with the information security publishing
programme of Elsevier: which includes Computer Fraud and Security,
Computer Law and Security Report and Infosecurity.
Links
Web page for John Daugman: http://www.cl.cam.ac.uk/users/jgd1000/
Home Office ID cards information page: http://www.homeoffice.gov.uk/passports-and-immigration/id-cards/
SA Mathieson, ‘LSE calls for decentralised UK ID’:
http://www.infosecurity-magazine.com/news/050705_lse_id.htm
LSE report: http://www.lse.ac.uk/collections/pressAndInformationOffice/newsAndEvents/archives/2005/IDCard_FinalReport.htm
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