Assuming one were determined to get a MailStation or MailBug onto their own ISP, which one appears to have the best "debugging" entry?
The surface-mount flash in the MailStation is beyond my reach, but if they have some way to get a logic analyzer on the CPU, and it uses a standard instruction set, it would be possible to fish for backdoors that way. For the super-determined anyway..
Most likely, a device like these has some sort of debug or programming mechanism.. a JTAG port, serial port, secret parallel port handshaking, that sort of thing. Has anyone spotted one?
I'm just wonder which of these two looks the most hackable. I sure could use an email terminal like this for lending out.