"What a piece of work is a man, how noble in reason, how infinite in faculties, in form and moving, how express and admirable in action, how like an angel in apprehension, how like a god!"
I dont think you understand how alarms and shops work. They dont set off because they somehow view a barcode on your wrist. You could walk in with 100 random barcodes and they shouldn't set off once. Alongside. If you get a barcode, you don't know what you'll scan as, it depends on the shops database and whats assigned to that barcode. So you want to check beforehand.
"What a piece of work is a man, how noble in reason, how infinite in faculties, in form and moving, how express and admirable in action, how like an angel in apprehension, how like a god!"
a barcode tattoo won't set off alarms in shops, so you don't need to worry about that, but if you want the tat to actually scan then you need to have a real barcode from a real product and even then it will only work in shops that sell that product. Plus.. who is gonna scan your wrist? i doubt many shop assistants would feel super exited about doing that. i don't think you'd get to show that trick off as often as you're expecting to and i think the novelty would wear off pretty quickly. But honestly? just do what you want. if what you want in your heart of hearts is a scannable bar code tattoo then go for it - if it makes you happy then who gives a sh*t?