A will may be deposited by the testator or the testator's agent with any court for safekeeping, under rules of the court. The will shall be sealed and kept confidential. During the testator's lifetime, a deposited will shall be delivered only to the testator or to a person authorized in writing signed by the testator to receive the will. A conservator may be allowed to examine a deposited will of a protected testator under procedures designed to maintain the confidential character of the document to the extent possible and to ensure that it will be resealed and kept on deposit after the examination.