You might think of Pokémon GO as anything but unsafe, but Japan seems to be worried about the safety of its citizens who will end up playing the game, and has already sent out a flier that outlines safety guidelines and measures that it wants players to pay attention to while also adhering to them. The guidelines might seem like a bit of an extreme measure at first, but it starts to make a little bit more sense when considering the numerous issues that players have had in other regions with the game since it was just released a little under two weeks ago.
At the moment Pokémon GO has yet to launch in Japan, which has likely caused legions of fans of the franchise to chomp at the bit with excitement in anticipation of the game hitting the app stores in the country. This has afforded the Japanese government the unique opportunity to issue the one-page flier that requests players make sensible decisions while playing the game. Of course, it might seem more than just a little bit silly that a safety advisory has to be put out at all, but it's also worth considering that Japan is the home of the Pokémon franchise where the popularity of Pokémon GO is quite likely to be higher than in the U.S., which may suggest that players could be more likely to make unsafe decisions when playing.
A statement issued by Japan's Chief Cabinet Secretary Yoshihide Suga relays the importance to Pokémon GO players of safety measures, and highlights that he wants players to "keep to the guidelines," which Suga states are there to ensure "incident readiness and cyber security." Although there are more than a few cases of players ending up in dangerous incidents that have resulted in potential physical harm, cybersecurity is also another big concern as there has been at least one reported case of a fake Pokémon GO app containing malware, and given that Pokémon GO is not yet available in Japan, players there are more likely to attempt downloading the game from outside the official app stores. Although Pokémon GO has not launched in Japan yet, it's rumored to be launching soon following an announcement yesterday that McDonalds Japan is partnering with the game for a collaboration.