ATM manufacturers have been working on ways to stop the theft of ATM machines, and sometimes the amount of money in the ATM is so small, it hardly seems worth the risk. But that hasn’t discouraged thieves this summer in such states as Arizona, California and Georgia. Thieves have pulled off or attempted such thefts at least 21 times this year in the Phoenix area alone.

To protect their money, many banks use ATMs equipped with global-positioning technology that tells authorities where the machines are.

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