Angelina and if your father and your brother are not at home and an emergency arises with you ? (i know very unrealistic, but possible)
Then we can call them to ask for the combination and if we can't get in contact, the belt needs to be destroyed I think.
Michael Why are there different rules for your mother and you and your sister?
My mother is in a different situation. My father thinks that my sister and I are in an age where it is necessary, because our urges are very strong. My sister cheated a while ago at school and this didn't help. For me it is also an extra security when I spend time with my boyfriend.