PIN code protection

[stud0709]

this will not protect the keys, it will result into three different modes:

• CODE A "all is well" - correct PIN, normal operation
• CODE B kill switch - clear all keys from the device
• CODE C fake mode - the device will work normally but present fake data
• WRONG CODE can be set up to clear all keys from the device after X unsuccessful entries
• Lock button on the camera screen to activate PIN entry now, otherwise it will be activated after X minutes