Usually Skimming card readers or Skimmers will be placed in ATMs or POS machines . Skimmer is a small electronic device which is capable of capturing the data present in magnetic strips of the cards. Skimming may take place during a legitimate transaction at a business. Such fraudlent activities can happen mostly in shopping outlets and restaurants. For example, in a restaurant your card may be taken away when the bill is being settled and may use your card for regular transaction,  also for capturing the card details. This captured card details will be misused by the scamsters.