Not really, when you install Jaxx you get a 12 word phrase, write this down, put it on usb or whatever and store these in a safe place. In the event that your pc and phone gets stolen, just install Jaxx again and enter your 12 word phrase which would then load your entire profile.
Protect your pc/phone with a password, plus enable finger print access/pin on your phone.
These are all basic steps imo, hope it helps