Techniques for providing details associated with an item for acquisition from a pick-up unit are described herein. In particular implementations, a service provider may determine whether a mobile device is within a predetermined distance from the pick-up unit. In some implementations, a companion application may allow a user of the mobile device to cause a sensory function at the pick-up unit when the mobile device is within the predetermined distance. For instance, the user may use the companion application to cause the pick-up unit to produce light, sounds, smoke, bubbles, among other operations.