“Since May 2017, we have the opportunity to use a helper, usually someone who is less than 17 years old. The person goes, buys alcohol at the store, and as soon as they’re leaving, inspectors come in. In a restaurant, at the moment when [alcohol] should be consumed, an inspector sitting at the next table identifies themself,” ČOI spokesman Jiří Fröhlich said, according to new server iDnes.