TOKYO - Japan will criminalise cannabis use and legalise medical products using substances derived from the plant under revised laws that will take effect on Dec 12, the health ministry said on Thursday.
This is worse than you think. Most countries don't criminalize use, only possession. Criminalizing use like Sweden does likely means that even having cannabis in your system is illegal and could lead to fines, criminal record, and jail time. It's insanely backwards.
You are a criminal. Just like when you rape a child in a country where it's legal (statutory rape based on age) you are held liable in your home country if the AoC is higher than in the country you visited.
It's probably the most widespread and established law around the world. Only the age limits differs, but hopefully backwards countries like most of Europe, South America, China and the Philippines will catch on soon.
In most cases if you are a tourist and are accused of minor crimes you just get deported unless you've done something else more serious. Detaining someone on a short term visa is awkward (what if their passport expires while in custody?) and kicking them out of the country accomplishes the same thing as jailing them.