From Adaptivation.   The HoneyBee is an easy-to-use proximity switch that senses the proximity of a hand, finger, head or nearly any object. To activate the HoneyBee, the user places his or her hand, head or other body part over the sensor window. An audible tone is heard when activation has occurred. The HoneyBee can be plugged into any communication device, adapted toy or computer interface that has a standard ⅛-inch jack.  The sensing range can be adjusted for any of four distances, allowing multiple positioning and access needs: 6- inches, 3 inches, 1 inch or direct touch.