This disclosure is directed to a complex computing network for obtaining and using data from a transmitting system and a digital tracking and relaying system. An exemplary method comprises: receiving, from a transmitting system, a first input data associated with a registered user account; receiving, from a digital tracking and relaying system, a second input data associated with the registered user account and captured by a sensor comprised in the digital tracking and relaying system, wherein the second input data is transmitted via an application programming interface (API) comprised in or associated with the digital tracking and relaying system, the second input data comprising usage data associated with the digital tracking and relaying system; and associating at least one of the first input data or the second input data with the registered user account, thereby causing an update to the registered user account.