That's what I tell my customers now whenever they start talking and I'm running behind. I point to the contacts on the bottom of the diad and say gotta go or I'm gonna get a shock. Works every time.
This is a scale comparison of a possible size we could see while making sense to UPS drivers. The right model is obviously around the size of DIAD V. The left model's size could be a possibility but those buttons are getting pretty tight.