on a less ambitions scale than a full DNA sequencer, think about the potential of similar MEMS-microfluidic biosensor arrays to detect specific substances that are produced as byproducts of diseases such as cancer. The ability to detect diseases at a very early stage could save many lives, and biosensors like this could be incorporated in mobile phone handsets, for example.
Yes, with every new technology man has the propensity for using for both good and evil..............