Dog-e-Minder. Is It Really Necessary?

I truly think the inventor of this product is trying to make money on people who like to spend their money on stupidity.  The Dog-e-Minder is a waterproof, three-button device which attaches to your pet;s collar and keeps track of when it was walked, fed, or given medication.  Each button has a symbol that relates to the activity.  The "fire hydrant" symbolizes when you walk it, the "dog bone" symbolizes when it was fed and the "RX" represents anytime you give the dog medication.  When any of these takes are performed you hold the corresponding button for three seconds.  And it records the date and time.  The tag also works as an ID tag.  IT shows the name and a contact number.  This device comes in various colors and is $20 (buy one get one free).  So if you have money to burn and a precious dog buy the Dog-e-Minder!!