Science Fiction Ideas

One idea that came to my mind was that I was frozen for 100 years, society decayed and moved backwards 100 years technology-wise. Cellphones, computers, ipods, etc. wouldn't exist. This would make my character stand out as an outsider because he knows about all of these technologies but no one else does. i think this would be an interesting topic to explore because it would be unique from everyone else's ideas. If I decide not to follow this plot, I would just invent something in my story that would drastically change the world such as time travel or something.