Ayúdame con el marketing

To whom it may concern. At the present time I am in process of developing a device (wristband) that will adivise you (sounding or vibrating) whenever you are 1 meter away from any article that the user previouly tagged (cell phone, wallet, backpack, laptop etc..) in order to prevent the users to lose/forget their possesions, but before i make an final invesment on it I would like to invest first to know whether or not it will be popular and it can be sale and of course have profits out of it regards