I frequently take notes on paper then scan them with Scanner Pro. It creates a well cropped copy of my note and uploads a PDF to my Google Workspace account. Both the file on Google and the copy that syncs to my MBA are immediately searchable (depending on my handwriting). And, as expected, the same process works perfectly with typed documents.
I always have my phone and my car keys with me, and normally a pen (and hopefully my wallet 
). Why rely on something else?