Today I released version 1.2 of the Password Protection shell expansion (SE) for Doors CS v4.8 and higher. It now works on all TI-83, TI-83+, TI-83+SE, TI-84+, and TI-84+SE graphing calculators with Doors CS present. This powerful tool, only 103 bytes when installed, will protect Doors CS from unauthorized use. When the shell is activated, you are prompted for a password that you have previously set. Enter it correctly and you proceed to the desktop. An incorrect password causes Doors CS to quit immediately. You can download this from the Cemetech archives right here.