Biometric technologies

In what follows there is a brief description of the principal biometric technologies, whose respective proponents - producers, research laboratories, think tanks - mostly tend to claim superiority over the others. A frequently used definition of "biometric" is that of a "unique, measurable characteristic or trait of a human being for automatically recognizing or verifying identity" (http://www.icsa.net/services/consortia/cbdc/bg/introduction.shtml); biometrics is the study and application of such measurable characteristics. In IT environments, biometrics are categorised as "security" technologies meant to limit access to information, places and other resources to a specific group of people.

All biometric technologies are made up of the same basic processes:

1. A sample of a biometric is first collected, then transformed into digital information and stored as the "biometric template" of the person in question.

2. At every new identification, a second sample is collected and its identity with the first one is examined.

3. If the two samples are identical, the persons identity is confirmed, i.e. the system knows who the person is.

This means that access to the facility or resource can be granted or denied. It also means that information about the persons behaviour and movements has been collected. The system now knows who passed a certain identification point at which time, at what distance from the previous time, and it can combine these data with others, thereby appropriating an individual's data body.

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Face recognition

In order to be able to recognize a person, one commonly looks at this persons face, for it is there where the visual features which distinguish one person from another are concentrated. Eyes in particular seem to tell a story not only about who somebody is, but also about how that persons feel, where his / her attention is directed, etc. People who do not want to show who they are or what is going on inside of them must mask themselves. Consequently, face recognition is a kind of electronic unmasking.

"Real" face-to-face communication is a two-way process. Looking at somebody's face means exposing ones own face and allowing the other to look at oneself. It is a mutual process which is only suspended in extraordinary and voyeuristic situations. Looking at somebody without being looked at places the person who is visually exposed in a vulnerable position vis-à-vis the watcher.

In face recognition this extraordinary situation is normal. Looking at the machine, you only see yourself looking at the machine. Face biometrics are extracted anonymously and painlessly by a mask without a face.

Therefore the resistance against the mass appropriation of biometrical data through surveillance cameras is confronted with particular difficulties. The surveillance structure is largely invisible, it is not evident what the function of a particular camera is, nor whether it is connected to a face recognition system.

In a protest action against the face recognition specialist Visionics, the Surveillance Camera Players therefor adopted the strategy of re-masking: in front of the cameras, they perfomed the play "The Masque of the Red Death" an adaption of Edgar Allen Poe's classic short story by Art Toad.

According to Visionics, whose slogan is "enabling technology with a mass appeal", there are alrady 1.1 bn digitised face images stored on identification data banks world wide. When combined with wide area surveillance camera networks, face recognition is capable of creating a transparent social space that can be controlled by a depersonalised, undetected and unaccountable centre. It is a technology, of which the surveillance engeneers of sunken totalitarian regimes may have dreamt, and one that today is being adopted by democratic governments.

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1960s - 1970s: Increased Research in Artificial Intelligence (AI)

During the cold war the U.S. tried to ensure that it would stay ahead of the Soviet Union in technological advancements. Therefore in 1963 the Defense Advanced Research Projects Agency (DARPA) granted the Massachusetts Institute of Technology (MIT) U.S.$ 2.2 million for research in machine-aided cognition (artificial intelligence). The major effect of the project was an increase in the pace of AI research and a continuation of funding.

In the 1960s and 1970s a multitude of AI programs were developed, most notably SHRDLU. Headed by Marvin Minsky the MIT's research team showed, that when confined to a small subject matter, computer programs could solve spatial and logic problems. Other progresses in the field of AI at the time were: the proposal of new theories about machine vision by David Marr, Marvin Minsky's frame theory, the PROLOGUE language (1972) and the development of expert systems.

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Gait recognition

The fact that an individual's identity is expressed not only by the way he/she looks or sounds, but also by the manner of walking is a relatively new discovery of in biometrics.

Unlike the more fully developed biometric technologies whose scrutiny is directed at stationary parts of the body, gait recognition has the added difficulty of having to sample and identify movement. Scientists at the University of Southampton, UK (http://www.isis.ecs.soton.ac.uk/research/gait/) have developed a model which likens the movement of legs to those of a pendulum and uses hip inclination as a variable.

Another model considers the shape and length of legs as well as the velocity of joint movements. The objective is to combine both models into one, which would make gait recognition a fully applicable biometric technology.

Given that gait recognition is applied to "moving preambulatory subjects" it is a particularly interesting technology for surveillance. People can no longer hide their identity by covering themselves or moving. Female shop lifters who pretend pregnancy will be detected because they walk differently than those who are really pregnant. Potential wrongdoers might resort walking techniques as developed in Monty Pythons legendary "Ministry of Silly Walks" (http://www.stone-dead.asn.au/sketches/sillwalk.htm)

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Identity vs. Identification

It has become a commonplace observation that the history of modernity has been accompanied by what one might call a general weakening of identity, both as a theoretical concept and as a social and cultural reality. This blurring of identity has come to full fruition in the 20th century. As a theoretical concept, identity has lost its metaphysical foundation of "full correspondence" following the destruction of metaphysics by thinkers such as Nietzsche, Heidegger, Witgenstein or Davidson. Nietzsche's "dead god", his often-quoted metaphor for the demise of metaphysics, has left western cultures not only with the problem of having to learn how to think without permanent foundations; it has left them with both the liberty of constructing identities, and the structural obligation to do so. The dilemmas arising out of this ambivalent situation have given rise to the comment that "god is dead, and men is not doing so well himself". The new promise of freedom is accompanied by the threat of enslavement. Modern, technologically saturated cultures survive and propagate and emancipate themselves by acting as the gatekeepers of their own technological prisons.

On the social and cultural levels, traditional clear-cut identities have become weakened as traditional cultural belonging has been undermined or supplanted by modern socio-technological structures. The question as to "who one is" has become increasingly difficult to answer: hybrid identities are spreading, identities are multiple, temporary, fleeting rather than reflecting an inherited sense of belonging. The war cry of modern culture industry "be yourself" demands the impossible and offers a myriad of tools all outcompeting each other in their promise to fulfil the impossible.

For many, identity has become a matter of choice rather than of cultural or biological heritage, although being able to chose may not have been the result of a choice. A large superstructure of purchasable identification objects caters for an audience finding itself propelled into an ever accelerating and vertiginous spiral of identification and estrangement. In the supermarket of identities, what is useful and cool today is the waste of tomorrow. What is offered as the latest advance in helping you to "be yourself" is as ephemeral as your identification with it; it is trash in embryonic form.

Identity has become both problematic and trivial, causing modern subjects a sense of thrownness and uprootedness as well as granting them the opportunity of overcoming established authoritarian structures. In modern, technologically saturated societies, the general weakening of identities is a prerequisite for emancipation. The return to "strong" clear-cut "real" identities is the way of new fundamentalism demanding a rehabilitation of "traditional values" and protected zones for metaphysical thought, both of which are to be had only at the price of suppression and violence.

It has become difficult to know "who one is", but this difficulty is not merely a private problem. It is also a problem for the exercise of power, for the state and other power institutions also need to know "who you are". With the spread of weak identities, power is exercised in a different manner. Power cannot be exercised without being clear who it addresses; note the dual significance of "subject". A weakened, hybrid undefined subject (in the philosophical sense) cannot be a "good" subject (in the political sense), it is not easy to sub-ject. Without identification, power cannot be exercised. And while identification is itself not a sufficient precondition for authoritarianism, it is certainly a necessary one.

Identities are therefore reconstructed using technologies of identification in order to keep the weakened and hence evasive subjects "sub-jected". States have traditionally employed bureaucratic identification techniques and sanctioned those who trying to evade the grip of administration. Carrying several passports has been the privilege of spies and of dubious outlaws, and not possessing an "ID" at all is the fate of millions of refugees fleeing violence or economic destitution. Lack of identification is structurally sanctioned by placelessness.

The technisised acceleration of societies and the weakening of identities make identification a complicated matter. On the one hand, bureaucratic identification techniques can be technologically bypassed. Passports and signatures can be forged; data can be manipulated and played with. On the other hand, traditional bureaucratic methods are slow. The requirements resulting from these constraints are met by biometric technology.

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Framing

Framing is the practice of creating a frame or window within a web page where the content of a different web page can be display. Usually when a link is clicked on, the new web page is presented with the reminders of the originating page.

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Fair use

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Leonard M. Adleman

Leonard M. Adleman was one of three persons in a team to invent the RSA public-key cryptosystem. The co-authors were Adi Shamir and Ron Rivest.

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VISA

Visa International's over 21,000 member financial institutions have made VISA one of the world's leading full-service payment network. Visa's products and services include Visa Classic card, Visa Gold card, Visa debit cards, Visa commercial cards and the Visa Global ATM Network. VISA operates in 300 countries and territories and also provides a large consumer payments processing system.

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