主权项 |
1. A system comprising:
an initiator sensor configured to detect a person; a controller couplable to the initiator sensor; a signaling device couplable to the controller, the controller configured to cause the signaling device to produce a signal based on input received by the controller from the initiator sensor after the initiator sensor detects a person; an engagement sensor couplable to the controller and configured such that, if coupled to an assistive ambulation device, the engagement sensor can detect if a person has engaged the assistive ambulation device; and a power supply couplable to at least one of the controller, the initiator sensor, the signaling device, and the engagement sensor. |