Skimming

The act of obtaining data from an unknowing end user who is not willingly submitting the sample at that time. An example could be secretly reading data while in close proximity to a user on a bus. See also eavesdropping.

The act of producing unauthorized copy of an electronic security device while it is being used for its intended purpose. Note: Originally, skimming meant making an illegal copy of a credit card or a bank card when the original was being used correctly. Typical methods of skimming involve use of a modified reader that reads and stores all the information that the original card contains.