TrackingPoint's ShotGlass

[GOST]

Here's you a high tech interface:

https://scontent-a-mia.xx.fbcdn.net/hphotos-xap1/t31.0-8/1294443_738065122940735_882183136807683662_o.jpg

http://www.recoilweb.com/trackingpoints-shotglass-digital-shooting-glasses-51839.html

[JoshAston]

As this kind of tech becomes smaller and better integrated it's going to get really interesting.