iPhone users have an alternative to B4Udrink.mobi for checking drunkeness. David Steele Enterprises sells the iBreath,
a compact iPod accessory that checks Blood Alcohol Concentration (BAC).
iBreath Breathalyzer & FM Transmitter for iPod & iPhone
iBreath is a full breathalyzer, and an FM transmitter that wirelessly sends iPod tunes to FM radios.
For more information you can view our first article on the iBreath or go directly to the iBreath website.
The iBreath does not show the actual BAC but shows the user if he/she is in the legal limits because some unsuspecting new drinkers sometimes want to see how drunk they can get.