... ibutton 2.Low-cost 3.Water proof 4.Unique ID Number 5.Compatible DS1990A-F5 ibutton TM1990A-F5 read-only type of card ... , compatible ds1990a.ibutton, also known as touch ... patrol, sauna door locks,electronic door locks, door intercom, card systems, identification, banking,Communications, rail transportation, transportation, and ...