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Dieter Glatz <[log in to unmask]>
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Dieter Glatz <[log in to unmask]>
Sun, 21 Oct 2012 07:04:15 +0000
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Hi there!

We are programming a tool for more interaction in the lecture hall.
To participate, students use their Smartphone, iPad, NoteBook, etc.
For identification a new token for each lecture is presented by the teacher on the front screen.
Students then have to enter this token in their device.
For security reasons the token shall have a variability of at least 1 in one hundred million.
We have three types of token in mind.
For each token spaces are included for better visualization, which need not to be entered.
Letters are NOT case-sensitive, too.

1: 8 numbers
   Examples: 746 495 37; 662 785 28; 968 367 76

2: 6 letters
   Examples: duj wjs, hpl qux, gie fvt

3: 4 syllables (a syllable is built by one letter each of the following sets: 'bcdfghjklmnpqrstvwxyz' und 'aeiou')
   Examples: ma pe ci ko, zu ku pa wi, yu vo do mi

We would like to know, which token will be grasped and entered fastest by the students?
What are the opinions on that?


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