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Security researchers frequently would like to know the probability people pick things for their 4-digit PINS (how often do people lock their phones with just 1234?). If you just ask people what PIN they use, they either will not tell you or will lie. People may not even want to use something like the strategy in this problem, because there's some probability that they may be asked to just give their PIN honestly. How could you build a polling strategy that could successfully estimate the probabilities people use various PINS with, but wouldn't require the person to ever give up their PIN entirely and clearly?

Security researchers frequently would like to know the probability people pick things for their 4-digit PINS (how often do people lock their phones with just 1234?). If you just ask people what PIN they use, they either will not tell you or will lie. People may not even want to use something like the strategy in this problem, because there's some probability that they may be asked to just give their PIN honestly. How could you build a polling strategy that could successfully estimate the probabilities people use various PINS with, but wouldn't require the person to ever give up their PIN entirely and clearly?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Security researchers frequently would like to know the probability people pick things for their 4-digit PINS (how often do people lock their phones with just 1234?). If you just ask people what PIN they use, they either will not tell you or will lie. People may not even want to use something like the strategy in this problem, because there's some probability that they may be asked to just give their PIN honestly. How could you build a polling strategy that could successfully estimate the probabilities people use various PINS with, but wouldn't require the person to ever give up their PIN entirely and clearly?
Transcribed Image Text:Security researchers frequently would like to know the probability people pick things for their 4-digit PINS (how often do people lock their phones with just 1234?). If you just ask people what PIN they use, they either will not tell you or will lie. People may not even want to use something like the strategy in this problem, because there's some probability that they may be asked to just give their PIN honestly. How could you build a polling strategy that could successfully estimate the probabilities people use various PINS with, but wouldn't require the person to ever give up their PIN entirely and clearly?
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