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  • ETSI ETS 300 767
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ETSI ETS 300 767

  • Human Factors (HF); Telephone Prepayment Cards; Tactile Identifier
  • standard by European Telecommunications Standards Institute, 07/01/1997
  • Publisher: ETSI

$9.00$17.50


To standardize one common tactile identifier to improve the usability of telephone prepayment cards for all users, especially blind and visually impaired people.

Product Details

Edition:
1
Published:
07/01/1997
Number of Pages:
11
File Size:
1 file , 36 KB

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