Ive also never paid with anything but cash at target however I've been with someone who has paid using methods linked to their identity, although I don't think i was shoplifting when i was with that person.

If you were to delete data youd likely need to be a hacker for companies that large i would imagine they use cloud storage

Just a warning, if you consistently sell large amounts of ink and start to make a decently profitable business even if you don't technically know where it comes from it will be very suspicious if investigated I'm not a lawyer but id consult with one if i were you. Atleast in America talking with a lawyer is protected communication and legally those discussions with lawyers cannot be used as evidence or even relayed to any court.

ive had success at home depot using the outdoor area, no cameras very large and with few people. Be careful though I've personally experience source tagging on low value items there and in 2018 i ran into a secret shopper. It was kinda of funny, the guy followed me and my friend around the store in plain clothes then came up to me and gave the employee line of hi can i help you with anything sir. Not very covert.

I've got some experience, dm me and we can trade tips