This is somewhat common throughout east Asia. Setting a phone or purse down to reserve a table is something I've in Korea, Japan, Taiwan, and even Vietnam. Ther

This is somewhat common throughout east Asia. Setting a phone or purse down to reserve a table is something I've in Korea, Japan, Taiwan, and even Vietnam. There's less of an idea that criminals will be deterred from crime because of surveillance, but that nobody is crazy enough to want to steal a phone or just walk into someone's house. A lot of people here just can't imagine the thought process behind committing crimes like that.