Nanomachine reads DNA letters

[fredreload]

So I want to know if a nanomachine can be constructed that reads DNA in the human body in real time as letters. I got this idea when I was reading this paper. So it could be an enzyme that would loop through the entire DNA segments with a wireless device attached that is capable of transmitting the results back, either that or we would have to monitor the result through a fairly detailed MRI using visualization technique. Both should be doable, but do let me know which is a better way. I'll let you guys decide

[CharonY]

There are sequencers which use nanopores for long reads, if that is what you are thinking about.