I use a paper notebook: write notes, date each page, and add entry to the index at book front or end for ease of finding it. I carry it everywhere & and it requ

I use a paper notebook: write notes, date each page, and add entry to the index at book front or end for ease of finding it. I carry it everywhere & and it requires no batteries:) When notebook fills up I scan each page into Evernote, which OCRs it. Low tech but it works.