ok i have just got my card reader from barclays, and after playing with it, I think it must work by useing certain numbers stored on your chip and applying them to a function to give a number, and each sucesive time the number increases so i assume it must have a internal clock which alows the number to be diffrent every time, but can any of you smart boffins out there work out the maths, just so i dont have to carry the bloody thing arround with me every time i want to log on, I mean i can just store a series of pre worked out numbers but i guess that defeats the point!
2007-11-22
22:58:51
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3 answers
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asked by
Mark R
2
in
Mathematics