This is of course dependant on whether the code within the board can also be protected from view.
This application note describes how firmware can be updated securely on AVRmicrocontrollers with bootloader capabilities. The method uses the AdvancedEncryption Standard (AES) to encrypt the firmware.This application note presents techniques that can be used when securing a designfrom outside access. Although no design can ever be fully secured it can beconstructed such that the effort required to break the security is as high as possible.There is a significant difference between an unsecured design that a person withbasic engineering skills can duplicate and a design that only few, highly skilledintruders can break. In the unsecured case, the design is easily copied and evenreverse engineered, violating the intellectual property of the manufacturer andjeopardizing the market potential for the design. In the secured case, the effortrequired to break the design is so high that most intruders simply focus on developingtheir own products.
that most intruders simply focus on developing their own products.
Doesn't using a bootloader keep you from using all the locks?