Since I run Ubuntu on my workstation at work I need a working eToken, so every time I upgrade (follow LTS releases) I have to make sure the eToken works. Because some have reported the installation steps I have described for 14.04 are not working for 16.04 I have decided to update the steps for the latest LTS.

Download the new client software at:
http://www.proteq.com.br/download/sac/sac9.1_linux.zip

Unpack the source:

unzip sac9.1_linux.zip

Prepare the install:

mkdir temp ; sudo mount -o loop SAC_9_1_Linux.iso ./temp

Install:

dpkg -i temp/Installation/Standard/DEB/SafenetAuthenticationClient-9.1.7-0_amd64.deb

Done.