My first posting. I've been lurking and learning about this really neat device for a few weeks now. Ready to start joining in and offering ideas and solutions. So here is an important question for one of my clients, an award winning educational software and game developer:

Will there be a unique machine readable serial number in each R-Pi?

Two possible ways pop into my mind are:

1) An Ethernet MAC Address.

Ethernet hardware addresses are 48 bits, expressed as 12

hexadecimal digits. The first three (left-most) bytes (6 digits)

represent the Manufacturer's code. These are assigned by the

IEEE. The remaining three (right-most) bytes (6 digits) represent

the manufacturer's serial number.

Note that all Ethernet MAC Addresses must be unique on the

LAN.

2) Embedded in the ARM/GPU/DSP SOC (System on a Chip) is a serialized ID.

3) Something else?

Thank you for what your doing.