Solution to California's problem of minors buying alcohol in self-serve lanes

There's a pretty easy solution to minors buying alcohol in California, as the Los Angeles Times reported is a big problem. There is an easy solution to it.

Here in New Mexico, if you buy alcohol in a self-serve lane at the grocery store, the register beeps and you need a cashier's approval to purchase the alcohol (there is one cashier at the front of every four self-serve lanes).

So what is California's solution?

California already forbids cigarettes, spray paint and some over-the-counter medications to be sold in self-service checkouts to make it tougher for minors to obtain them. The bill, AB 1060, would add beer, wine and spirits to that list, according to its author, Assemblyman Hector De La Torre (D-South Gate).

Doesn't seem as smart.