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This is the POS Vulnerability Rank Calculator from my book - Hacking Point of Sale - which is located in Appendix A. Thanks Wiley for creating this presentation and making it available for everyone. Using this questionnaire, which consists of 20 questions, anyone can conduct a very brief security risk assessment of their point of sale system. The result of the assessment is a numeric score - "POS Vulnerability Rank" - in a range from 0 to 20, where 0 means the perfect system and 20 stands for the most unprotected POS environment. The rank can be interpreted according to the "Decoding the Results" table.
Give it a try and and let me know about the results!