Is there a Turing machine that recognizes ETM?
Answer: We need to show there is a Turing machine that recognizes ETM, the com- plement of ETM. Let s1,s2,s3,... be a list of all strings in ??. For a given Turing machine M, we want to determine if any of the strings s1,s2,s3,... is accepted by M.
What is a mapping reduction in Turing machine?
Turing machine M that halts with just f(w) written on its tape, for every input w. language A is mapping reducibleto language B, written A ?mB, if there is a computable f : ?* ??*, such that for every w, ?A ?f(w) ?B is called a mapping reduction (or many8one reduction) from A to BLet f : ?* ??* be a computable functionsuch that w ?A ?f(w) ?B
How to improve the security of the ATM system?
The original password authentication method combined with the biometric technology for identification in the ATM machine has improved the security of the transaction with increasing emphasizes given to security automated personal identification needs to be added to the traditional ATM system to overcome its disadvantages.
What is ATM tampering?
The term refers to low-level operators within a criminal organization who are assigned high-risk jobs, such as installing ATM skimmers and otherwise physically tampering with cash machines.