Patent ID: 8157176

Claim:
An apparatus comprising: a unit having a stationary marking device and a first communication interface, the unit being configured to be manually moved relative to a surface being printed upon by the unit during printing and to alternatively be held stationary along with the marking device as the surface being printed upon is moved relative to and external to the unit, wherein the unit includes a controller; and a first module releasably connected to the unit, the first module comprising one of a handle configured to provide a handgun-like grip, a hand mount configured to mount the unit on the back of a person's hand or a stationary mount configured to support the unit in a stationary position, the first module having a second communication interface connected to the first communication interface, wherein the first module includes at least one first digital identification code, wherein the controller generates control signals based on the at least one first digital identification code, wherein the at least one first digital identification code has a first assigned value associated with a customized setting for a first user or a first job for a function performed by the unit.