Wristbands and clunky guest lists are a thing of the past with DoorList, an event management suite for planning, organization control, and entry scanning. After assigning each user a unique ID based on their phone number, DoorList creates a unique QR Code that represents the user along with additional security measures to prevent screenshotting and recording. The time-based QR security means that by the time a screenshot is sent, it is already invalid. Event hosts can be sure that each person they put on the list will only correspond to one actual entry.