People get wrapped up over the silliest things and call it “opsec” but here’s an actual opsec tip a lot of people slip up on

are you covering a mailing address on an envelope for a photo? are there any barcodes of any kind anywhere on the envelope? (hint: yes, there are.) QR codes are a barcode. faint small tick marks are a barcode. fluorescent tick marks that seem invisible in the photo are a bar code. and the bar code IS the destination.