A will may be deposited by the testator or the testator's agent with a court for safekeeping, under rules of the court. During the testator's lifetime, the will must be 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 kept confidential and on deposit after the examination.