It's not so far when our brains will also have such chips, as you said it will help people to remind us when to take pillows or that we have a meeting at 4 pm, but it can also be used to harm us, and it doesn't matter what an optimistic person you are, it will surely be used by the army in such away.
Pcb manufacturing is trying to do this for already a lot of years since it was invented people understood that once it will be able to implant such chips in brains and help people, but only now it was possible to make the prototype, and soon we will surely see the first people who have installed chips in their brains.