This password protection program, which I titled TI84OSST (TI 84 Operating System Startup) is a program for calculator startup. There are several other subprograms and pictures that you need to add for this to work. First, you must set defaults and have your calculator's time set correctly. Next, you have to create the other programs listed below and set the picture to the right as PIC1 on your calculator. it's not an easy program to make (about 50 KB worth of data!), but it was worth it for me. This program will only execute on startup if you have Texas Instruments' StartUp app. The app can be downloaded here.