The Onelink Tracker is ideal for keeping track of kids, pets or personal belongings. The device sends an automatic notification to the user’s Android or iOS device when the user has been separated a specified distance from the tagged item, preventing it from being left behind, or from someone else walking away with it unnoticed. The device can also act as a home security system. When attached to a door, it can notify the user when the door is opened and closed. The Onelink Tracker will send an alert that asks if the user wants to call 911, alert friends and family, or ignore/turn off.