The unique patented design of the 7-Day Locking Pill Reminder features a locking device that prevents pills from spilling inside your purse, briefcase or suitcase. Also, lids wont accidentally open and spill the contents when dropped. The locking device also works as a child deterrent by making it more difficult to open than a pill reminder without a locking device. Each lid features a large imprinted letter designating the day of the week as well as braille markings for the visually impaired. Can be used with or without locking device. Product Benefits.