Pixelflut
Join the pixel war at Hall H and send your pixels to our wall!
Look at the ceiling over our assembly at chaoszone to find the pixelflut, including the current IP address.
Bash example:
Set an orange pixel at position 20,30 (x,y):
$ echo -en 'PX 20 30 ff8800\n' | netcat -q1 151.219.27.209 5173
Pixelpwnr example:
pixelpwnr 151.219.27.209:5173 -i image.png -w 200 -h 200 -x 100 -y 100
For further information check out the instructions linked below.