A depositary may not use the thing deposited or permit it to be used for any purpose without the consent of the depositor. A depositary may not, if it is purposely fastened by the depositor, open it without the consent of the depositor, except in case of necessity.
Depositary Not To Use Or Open Thing Deposited
Mont. Code Ann. § 70-6-201, under Rights and Duties of the Parties Generally.
Mont. Code Ann. § 70-6-201