In this chapter, you learned about Tor and how to circumvent Internet censorship by running a Tor bridge on BBB. We've also shown how to add some basic hardware controls to BBB in order to create a front panel interface. Lastly, through some Python code, we were able to tie the hardware controls and the Tor bridge together.

In the next chapter, we'll take a closer look at specialized cryptographic hardware available for BBB and show you how to use each of these devices.