Devices like Pavlov Poke "help eliminate the online habits we already have" by administering an electric shock every time a user spends too much time on Facebook.
And if that doesn't help, the service can have a random stranger call you and yell at you:
Their take on mobile devices and Google Glass is also interesting:
Unfortunately, as new technologies become more mobile, they become harder and harder to resist. Indeed, the more ubiquitous and accessible the technology, the more addictive it can become. This is why Facebook built Facebook Home. This is why extra caution should be given to technologies built for devices like Google Glass. Personally, I don't want to try Glass until I know I can manage its potentially addictive properties. The last thing I want is to have to build a shock device that's hooked up around my eyeballs.