A rising societal concern in Japan relates to a frightening scenario being termed as 'tag-along' in the context of auto-lock systems in residential areas. Instances are being reported where individuals are taking advantage of the brief moment when the auto locks open, to enter buildings without permission. This issue primarily happens in densely populated cities and high-rise apartment communities where the use of auto-lock systems is widespread. The timing, specifics of the incidents and identities of both victims and culprits are yet to be publicly provided or confirmed.

In Japan, where safety and security is highly valued and crime rates are significantly low, unfamiliar people entering their private spaces invokes fear and discomfort among the residents. The gravity of this issue is heightened due to the widely prevalent use of advanced auto-lock systems, signifying a potential loophole in their security arrangements. This news is causing considerable alarm among the public, prompting them to question the effectiveness of their well-regarded security systems and demand an urgent solution.

In the United States or European Union, issues of security breaches also cause alarm but are not as shocking due to generally higher crime rates. Measures such as CCTVs and security personnel on premises are more common, in addition to auto-lock systems. In these regions, although security is a concern, the reaction might not be as intense as in Japan.