Memory Key. Can’t remember whether you locked the front door or not? You need this, oh person of distracted attention. $17.99.
Can’t remember if you locked your front door this morning? Let the Memory Key remind you! Just clamp the Memory Key housing over your existing house key and place the small marker on your door lock. Now every time you lock or unlock the door, the Memory Key will recognize it and store that information in its memory. So the next time you wonder whether you’ve locked the door, you can just look at the key!