A tool bit holder for releasably supporting a plurality of tool bits in a supported position wherein each tool bit has an elongated bit body extending from a working end to a tool end. The method can include receiving an input signal. An estimated separation angle error, an estimated position error, and an estimated attitude error are estimated based upon the received measurements to provide estimated errors. An illumination device is detachably attached to the casing to provide illumination when required. Portals including tabs linking to available money transfer-related services associated with the determined profiles are provided.