It also reflected the needs of households in modern society. For instance, many families, for reason of their children's education, have several residences and may not be actually residing in their registered official residence. "Semigrant" (partially emigrated) families may go for three months without being under the same roof.
同時也反映了現代社會新家庭型態的需求，例如許多家庭因為子女就學，可能夫妻各有戶籍，或戶籍地並非真正住所；「太空家庭」可能三個月才能相聚，住所的意義已經不大。