After reading few articles about the “digital drug”, I think that in one side, its one of the best invention whereas on another side there are some issues which had to be corrected before releasing it into the market. As in the comments above, it is mentioned that it is a concern that people may hack into someone’s personal records which is a major drawback of this product. But why will someone hack into someone’s record to check if the concerned person has taken his medicine or not? Will the potential hacker get any benefit from that? NO!

One more thing was also mentioned in the article that the device does not give the real time results. There is always a delay in the result. So that needs to be fixed soon too.
In my point of view it is a device that implanted inside a human body so that with some chemical reactions inside the body, it will track if the patient has taken the medication or not.