Another very nice story situated in the near future. New treatments allow to recover from various existing diseases, though not everyone and not perfectly. In any case, an old poet being in Alzheimers coma is now brought back - and is confronted with a changed world in which he has to accommodate and find his place. It is world where everyone is connected via wearable computers, contact lenses allow to overlay anything onto the real view, to various degrees. So there is a sliding transition from reality through augmented reality to virtuality possible, adjusted to the situation, not either or.
Finding his place back he gets involved, or rather is being used, in convoluted plans behind plans of others. As in that time it is possible for single people to get access to weapons of mass destruction - putting lives of millions potentially into the hand of a some disgruntled guy on the corner. And potentially even much worse pieces of warfare into the hands of organized crime. Therefore there is strong police/military/intelligence in place to help preventing the worst.
Our protagonist is, unknowingly, in the midst of it.
Very entertaining, full of tension - interestingly geeky stuff out of the future.