Abstract: A distance control system for online appointment booking by visiting service providers compares location of a booking applicant with service provider travel distance limitations. When location is beyond the travel distance, a warning message is presented, and alternate service providers are suggested. A method for online document upload and verification of tests results comprises making materials describing patient test results viewable to authorized health professional devices, receiving verification of the materials from the devices, and receiving a dynamic QR code based on the verification and on analysis of materials and determination of patient health status.