Chapter 18
Specific Laws Relating to the Transfer of Objects from One Place to Another on Shabbath, Where There Is No Eiruv
Specific laws relating to the transfer of objects from one place to another on Yom Tov are dealt with in Chapter 19.
ARTICLES WHICH ARE WORN
22.a. A soldier may, if the need arises in the performance of his id security duties, go out into reshuth ha-rabbim wearing a chain with an identification disc (bearing his name, number, blood group and so forth) around his neck.
22.b. Subject to the following two conditions, a person is allowed to go out into reshuth ha-rabbim with an identity card or certificate, during time of war or emergency.
1) It must be carried in an unusual way, for example stuck into one’s hat.
2) One must be on one’s way to perform a mitzva, for example to prayers or to study Torah.

