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Designing Touch Screen Numeric Keypads: Effects of Finger Size, Key Size, and Key Spacing

Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 1997
Designing numeric keypads for point-of-sale devices to optimize keying speed and accuracy while efficiently utilizing touch screen real estate is a challenge. Existing design guidelines for touch screens are applicable to only specific classes of devices and fail to consider user variables such as finger size.
Brenda Scott, Vincent Conzola
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Expanding Weak PRF with Small Key Size

International Conference on Information Security and Cryptology, 2006
We propose modes for weakly-secure block ciphers that take one block input to provide output of arbitrary length. Damgard and Nielsen proposed such a mode called the Pseudorandom Tree (PRT) mode, and demonstrated that PRT could be used to establish a communication channel that is secure against Chosen-Plaintext Attacks, if the underlying block cipher ...
Kazuhiko Minematsu, Yukiyasu Tsunoo
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