Perplex City Postcard

Jonas from the Unfiction forums picked up this postcard in Bologna Airport. (Thank Jonas for the pics)

Speculation

Theres possibly a Sente signature on it
Postcard Discussion on unFiction.

Content

(This is provided by oneliiivewire on the forums)

On the front, there is a painting. You're right about the windows- they stick out and definitely *seem* to be binary code or something. Not so sure about them being jibberish- makes me think perhaps they want to lead you on and on and on because... I flew all over the BACK side of the card and haven't deciphered anything yet. On the left-hand side is the note starting "my friends-" At the bottom is the authentic "Sente" signature, underneath it www.perplexcity.com upside-down. At the very bottom in small print the card reads: "Image on reverse: 'Perplex City Sleeps' (artist unknown), #02 in a series of postcards depicting the city at night. The full set is available from the Academy gift shop." Ok, how convenient that the artist is "unknown", and where is "The Academy"?! Moving on: The right side of the card gets trickier. Upper right, I'm sure you've all noticed 2210, then the black and white postage-stamp strange looking square. UNDERNEATH that square is a series of very very small numbers, which have had me wrapped up for quite a while!! The series is: 221545484848465100503215 Had to look long and hard and battle tiny text for that one. Any clue as to what THAT means?! Now for the blackened text! Underneath "Mc, please expedite global release. S" are five lines of blackened text. I went all over my town today putting these under black light, red lens, green lens, backlighting them with high-powered opthalmologist's equipment- THE WORKS, and have decided that on this mass-produced, photo-copied card, the lines, comprised of small red and green dots (thanks to a high-powered lens...), are only there to mislead you. I think the windows on the front side in the painting are more...."

Letter on Postcard

My friends -

I need your help.
Cube - Missing.
Presumed Stolen.
Not enough room to 
explain here.
Too risky.
Your assistance will
be rewarded.
More contact to 
follow - stay alert.
Yours in hope,

Sente