Earlier quoted context omitted.
First thought for easy digitization of hand written notes is an iPad with pencil by your workstation. A BKM for integrating that into your Zotero workflow isn’t obvious though.
Does BKM stand for bookmark manager or something else? I tried searching for "BKM" but didn't come up with many (relevant looking) hits.
Best known method: "bkm acronym" came up with it as first result.