This is one of the hoax mails in circulation for a long time and the contents are not true.
Contents of the hoax slayer site reproduced below:
ATM Security Advise Message : Enter PIN
In Reverse to Call Police
Outline
Message claims that if you are forced by robbers to withdraw money from an ATM, you can secretly alert police by entering your PIN in reverse.
Brief Analysis
The claims in the message are false. Reverse PIN technology does exist. However, it has not yet been implemented by any banks.
At this time, entering your PIN in reverse will NOT call police.
Detailed Analysis
This email forward claims that if criminals force you to withdraw money from an ATM, entering your PIN in reverse will automatically alert police.
The technology that makes this possible does exist. However, so far, banks have not implemented it. Thus, at the time of writing, if you are forced to withdraw money against your will, the chance that the ATM you are using will have the reverse pin technology installed is virtually nil.
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To reiterate, although such technology exists, and legislation in some jurisdictions may eventually force their banks to begin using it, the system is NOT currently in use. Entering your PIN in reverse at an ATM will NOT call police and will only result in an "incorrect PIN" error message.
Thus, this email contains dangerous misinformation and it should not be forwarded. If and when banks begin to install reverse PIN technology at ATMs it is sure to be well
publicized. If your own bank begins using such a system, it will almost certainly let you know about it directly.
S.V.SAI BABA
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