Abstract: Input devices having a thin profile and good comfort and feel are disclosed. In embodiments, an input device includes a sensor layer configured to effectuate a key press upon application of an activation force, and a collapsible layer coupled to the sensor layer. The collapsible layer may be configured to collapse in response to a collapsing force that is substantially equal to the activation force. When the collapsible layer collapses, the sensor layer may simultaneously effectuate the key press in response to application of the collapsing force.

Abstract: Transaction processing in an offline environment for a prepaid product comprising a portable consumer device includes responding to presentation of the prepaid product at a reader for offline processing by initiating operation of the prepaid product, receiving data from the prepaid product at the reader that indicates the prepaid product is associated with a prepaid account balance, determining that the prepaid product is in a negative balance condition, and taking preventive action in response to the negative balance condition such that future acceptance of the prepaid product at a reader is prevented.

Abstract: The present invention relates to a data input device suitable for inputting data to electronic processing means. The data input device is configured to produce an output in response to a mechanical interaction and may be reconfigured into two operational configurations. In a first flexible configuration the device may be bent or flexed about a first axis, and in a second rigid configuration the data input device is substantially rigid such that bending or flexing of the device about the first axis is inhibited.