An initiative designed to catch out adults who buy alcohol for minors got under way in Scotland this week.
The scheme, which is being tested in Falkirk, Bantaskine, Tamfourhill and Camelon, requires retailers to mark bottles of alcohol with an identification code. This can then be used by police tackling underage drinking to trace products back to an individual store.
If an adult has purchased the drink, he or she can be identified using the store's CCTV system and street cameras - and charged.
Retailers hope the scheme will clamp down on the number of youngsters trying to outfox them by getting grown-ups to do their dirty work.
"Adults who buy alcohol for youngsters are not only breaking the law but threatening the good relationship between stores and members of the community who wrongly blame retailers for selling drink to youngsters," added John Drummond, chief executive officer of the Scottish Grocers' Federation.
A spokesman for Spar operator CJ Lang, whose Camelon store is involved in the scheme, said he welcomed the co-operation of the authorities and hoped the scheme would be replicated nationally.
"While this is not infallible, positive CCTV identification at the time of purchase can make a difference between the police being suspicious of an individual and conviction of that individual," he said.