Time Management Device/Alarm/Reminder

  1. Has anyone ever heard or saw a device/watch/alarm in which you can set to remind you to do something?

    I came up w/ an idea of making a device (smaller than a beeper but larger than a watch) that you can record/text messg. an event for a patient, only to be told there already is one. But no-one can tell me WHERE!

    just wondering?