Large retailers in Scotland are now banned from displaying cigarettes and tobacco products.
The ban will be rolled out to smaller shops in 2015.
Health campaigners say the law - which is already in force in England - will help stop young people smoking.
However, many retailers claim there is no evidence it will make a difference.
Kathryn Samson reports:
More top news
A new look for our political programme from Westminster - Paul Brand and guests consider Theresa May's vision for Brexit.
Calm but cloudy - but when will we see some sunshine?
Students and staff from the University of Cumbria have been forced to cancel a zoology research trip to Gambia, due to political unrest.