Digital materials are listed as Practically Extinct when the few known examples are inaccessible by most practical means and methods.  This classification includes Critically Endangered materials in the presence of aggravating conditions.

In alphabetical order, Digital Species found to be Practically Extinct are: 

 

Pre-WWW Videotex Data Services and Bulletin Board Services

Pre WWW telephone and television information services that allowed a degree of user interaction and data retrieval with modem-based two way communication.

Action:

Action Most Urgent

(Action and reporting within 12 months when discovered)

Assessment Completed:

November 2017

Examples:

Prestel,

Minitel,

VidiTel and Videotex NL,

Alex,

BelTel,

FidoNet

 

Aggravating Conditions:

Lack of understanding;

structure of information silos;

Lack or loss of documentation;

Uncertainty about intellectual property rights;

Lack of funding or impetus

                         

Practically Extinct small

Practically Extinct: in the presence of Aggravating Conditions.

Critically Endangered: where good practice can be demonstrated.

 

Pre-WWW ViewData and TeleText Services where no archival agency has captured and retained the signal

Pre WWW television information services broadcast within the TV signal that allowed a degree of search and retrieval of up-to-date information, based on TeleText or ViewData technologies and variants.

Action:

Action Most Urgent

(Action and reporting within 12 months when discovered)

Assessment Completed:

November 2017

Examples:

AerTel,

Electra,

MetroText;

Antiope-based systems

 

Aggravating Conditions:

Lack of understanding

structure of information silos;

Lack or loss of documentation;

Uncertainty about intellectual property rights

Lack of funding or impetus

                         

Practically Extinct small

Critically Endangered: where good practice can be demonstrated.

Note: this category was originally proposed as 'Pre-WWW ViewData and TeleText Services' alone without the qualifier 'where no archival agency has captured and retained the content'. This qualification was introduced and the examples of Ceefax and Teletext Oracle also removed upon notification that an archival agency has been identified holding and making accessible comprehensive examples of these materials.

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