While I was busy building up my internal medicine practice and side business in clinical software, my wife Susie’s health was deteriorating as the complications from 20 years of Type I (insulin-dependent) diabetes accumulated. Home blood glucose monitoring was becoming available, and it was hoped that more precise control of insulin dosage could forestall complications, but data management remained primitive and paper logbook-based.
In hopes of helping Susie record and visualize her blood glucose data, I added a remote terminal to my Apple II+, consisting of a TV set mounted into the wall of the kitchen and a light pen built from plans in Byte Magazine. The built-in TV made the kitchen look high-tech, and the light pen let her enter her blood glucose without using a keyboard. The software could print out a log for visits to her physician, who found the graphs printed on curly thermal paper occasionally helpful.