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Two things: (It was going to be three, but I deleted a rant about "rules" and "compliance".)
1 - I used such a device several years ago - even got permission to use power from an OI joyport (a pic and an LCD draw about 15-20 mA) even though First INSISTED that all devices had to be battery operated, instead of just saying 'must not require 110VAC power'. The next year, they used the same rule, but decided against my little circuit on the basis of "had to be Battery operated" - as if the outcome of the match _depended_ on it).
2 - The PIC and surrounding circuitry is a computing item that I can lift and put in my pocket. I devised one such. Surely, that does meet the First definition of a portable computing device. A 9V bettery feeding a 78L05 regulator would restore the function.
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