Abstract: A system comprises: a payment accessory including: a payment accessory including: at least one payment data sensor, and an accessory housing defining a mounting interface carrying a set of electrical contacts; and an adapter including: an adapter housing defining (i) an accessory bay configured to removably receive the mounting interface of the payment accessory, and (ii) a device interface opposite the accessory bay, the device interface configured to couple the adapter to a mobile computing device to interconnect the electrical contacts of the mounting interface with the mobile computing device.

Abstract: A tethering device includes a primary housing supporting a retraction mechanism; a secondary housing configured to be connected to a tethered object; a retractable tether extending from the retraction mechanism to the secondary housing to movably couple the secondary housing to the primary housing; a first magnet assembly supported by the primary housing; and a second magnet assembly supported by the secondary housing, wherein the second magnet assembly is configured to engage with the first magnet assembly to bias the secondary housing towards the primary housing.

Abstract: A tethering device includes a primary housing supporting a retraction mechanism; a secondary housing configured to be connected to a tethered object; a retractable tether extending from the retraction mechanism to the secondary housing to movably couple the secondary housing to the primary housing; a first magnet assembly supported by the primary housing; and a second magnet assembly supported by the secondary housing, wherein the second magnet assembly is configured to engage with the first magnet assembly to bias the secondary housing towards the primary housing.

Abstract: A mobile device is described. The mobile device includes a housing having a pistol grip portion. A display is coupled to the housing such that the display is viewable by a user of the mobile device when the pistol grip portion is held in a hand of the user. A trigger-like control switch is located on the pistol grip portion of the mobile device. A pointing device is located on the trigger-like control switch such that the pointing device is accessible to an index finger of a hand of the user when the pistol grip portion is held in the hand of the user. The pointing device controls at least one function of the mobile device.