How an I add metadata to a scanned photo?

Episode 1686 (1:26:49)

Cody from California
IrfanView

Cody recently bought an Epson FastFoto to capture his old family photos. But how can he add metadata to it? Leo says that the EFF does scan the back of the photo as well, and can add that to metadata. But other than that, Cody will need to add that in software manually. One way around this is to upload all those photos to Google Photos and it will use both facial recognition and background data to determine who and where is in the picture. Irfanview is another good option for WIndows.