The T1D Exchange Registry is a research study, conducted over time, for individuals with type 1 diabetes and their supporters. Participants volunteer to provide their data for research (for example, by answering questions in annual surveys). Once enrolled, Registry participants have the opportunity to sign up for other studies on various topics related to type 1 diabetes. To participate, you will be asked to: * Read and sign an online informed consent form * Take a survey describing specific demographic and type 1 diabetes management information * Update your information annually * Periodically opt in for additional research opportunities (if you choose), i.e. taking new surveys or uploading health device data