When using an ATM you should take several precautions, since according to the National Commission for the Protection and Defense of Users of Financial Services (Condusef) it could be an opportunity for thieves to commit fraud.
Card carving is a type of fraud that is carried out when going to an ATM, where several criminals alter the ATM slot where you insert your plastic, later one of them approaches to tell you that the ATM is failing, trying to take your card saying you need to clean or carve it before the device can read it.
It is there when the offender takes advantage of the moment to change his plastic for another and leaves, later another accomplice enters the ATM to observe his PIN while carrying out the operation with the false card.
Reference-www.eleconomista.com.mx