Worried about drones and what they can do to you? Then you are going to need a privacy solution like DroneShield. It is a device designed to alert you when it detects the presence of nearby drones. It issues alerts via e-mail, SMS, or a flashing light.
DroneShield has a microphone that listens for sounds of drones. It has a database of acoustic signatures to reduce false alarms. Considering how many folks are concerned about drones these days, a product like this can sell big. What do you think?