Portal v4
Portal v4 is the latest version of the shackspace portal. It controls access to shackspace through the ssh keys of the key members. Portal v4 is a more enhanced version and makes use of the Rasperry Pis GPIO pins. Also all python scripts are now updated from python 2.x to python 3.x.
Documentation for the setup is in doc/setup.md. The hardware setup is described in 'doc/hardware.md'