On: First came the Breathalyzer, now meet the roadside...

[s_q_b]

One example:

Bar Receipts are used to Indict Suspect in Fatal 2013 Hit-And-Run.

>>Investigators interviewed witnesses and obtained bar receipts to determine when, where and how much McIvor had been drinking, said Sgt. Tony Landato, a Mesa police spokesman.

http://www.azcentral.com/community/mesa/articles/20140206mes...