It provides a tool, a tactful way to cut-off drunk and unruly customers. The machine may increase beer sales as well. The bright 3 digit digital readouts and humorous verbal responses will encourage many people to use the machine more than once to see if they get different responses and results. The machines should be checked on a weekly basis for the first 3 weeks. After that you can service them every 3 to 4 weeks.
Service is minimal.
Then check the machine's calibration about every 90 days or so and once in a while replace the lightblub. Everyone, young and old. Most of the repeat users will be young people at college bars and sports bars. Many businessmen are also using these machines again and again. The drunk driving issues insure repeat use of our machine for years of constant income.