Memory Implants for the Brain via Advisory Systems

I think we are some ways from being able to do this, at least in the sense it can be connected directly to the brain. Perhaps sooner as an external interface that forms a 'remembrance engine'.  Search engines by themselves already do this to a degree.  Perhaps they can be augmented to do it better.   Beyond the military, It has also been suggested for Alzheimer therapy.  Essentially it can be seen as an advisory system based on context.    In Military.com: 

" ... Now, the Defense Advanced Research Projects Agency (DARPA) wants to expand on that cutting-edge work to build other potential breakthrough medical technologies, including a pacemaker-sized device that might someday improve the memory of troops who suffered a traumatic brain injury. Think of it as a hard drive of sorts for the brain.  ... "