1. A mobile dimensioner device, comprising: a display; one or more optical sensors; one or more measurement sensors; an input subsystem; one or more processors; and memory containing instructions executable by the one or more processors whereby the device is operable to: receive a threshold number of contrary events; activate at least one of the one or more measurement sensors; derive a first set of dimensions for an object and an associated indication of the dimensional accuracy of each of the dimensions based on information received from the one or more measurement sensors; display, on the display, the first set of dimensions and the associated indication of the dimensional accuracy of each of the dimensions; display, on the display, an indication to obtain a better measurement of the object; detect a number of contrary events; if the number of contrary events detected exceeds the threshold number of contrary events, receive a deactivation event and deactivate the device in accordance with the deactivation event.