Devices are provided which include a component assembly for detecting inward, outward and sideways door movement. A component of the assembly extending from a structure comprises a distal end for contacting a door face when the structure is arranged in proximity to the door face. Systems are provided which include a portable stand, a door movement sensor attached to the stand, a proximity sensor, and a user interface. The system is configured to transmit signals to the user interface when the proximity sensor has been placed a predetermined distance from a door face and when door movement occurs. Apparatuses are provided which include program instructions for receiving input regarding a number of entryways of a room and inhibiting commencement of a task for which an apparatus arranged in the room is configured to perform until a number of signals received from a door movement sensor equals the number of entryways.
