An individual recently arrested in Japan for suspicion of trespassing has admitted to "stone marking", an activity that involves leaving stones in noticeable patterns as a sort of code for potential illicit activity. The suspect was found in the early hours, acting suspiciously in a suburban neighborhood. His actions have prompted a wave of concern among Japanese inhabitants about their property safety.

In Japan, crime rates are generally low compared to the global average. Nevertheless, bracing against home intrusion is a common concern among residents. The idea of "stone marking," akin to urban legends, was largely considered as myth until this individual confession which has shocked the public and provoked increased worries about invasion of personal space.

In America or Europe, similar cases might be met with local authorities increasing patrols and residents stepping up home security measures. The fear and psychological impact are similar across cultures when it comes to breaching personal spaces. The use of coded signals (like stone marking) in criminal activity also has a long history globally.