LG Electronics is set to introduce a new cell phone feature into the US market. The LG-SD410, LG-KP4100 and LG-LP4100 will feature a built-in breathalyzer.

The phone can also be programmed to block outgoing calls to selected numbers (aka Drunk Dialing) when the BAC reading is over 0.08.

Apparently the features are already a hit in Korea, selling more than 200,000 units.