The display is divided into 6 horizontal bands of 8 bits each (48) and 84 columns . At a time you write to a single bank. And you can continue to update only a single bank just in case you have dynamic data in that particular bank. The communication is done using SPI. The code th...
Technological security being equal in both locations (the bank office and the prison will likely have governance policies stating what security measures must be present on both machines), the only difference is the people, and assuming that all jail inmates are Evil isn’t good security; just pr...