Patent ID: 8763900

Claim:
A card reader comprising: a stationary back plate; a stationary front plate connected to the back plate, wherein a slot is formed between the back plate and the stationary front plate and wherein the slot is configured to receive a card; a protrusion extending from a first bottom portion of the stationary back plate or the stationary front plate, wherein the protrusion extends at least a height of an on/off button of a mobile device, abuts against a surface on which the on/off button extends from on the mobile device when the card reader is inserted into the mobile device, and does not overlap the on/off button when the card reader is inserted into the mobile device; a jack extending from a second bottom portion of the stationary back plate or the stationary front plate apart from the first bottom portion; and a housing extending from the second bottom portion of the stationary back plate or the stationary front plate, wherein the jack extends through the housing.