Tattoos are basically ink being delivered in the lower layers of skin by poking. They look vastly different depending on the healing process. I'd imagine the scientists can distinguish between pre and post mortem punctures pretty well. The amount of ink remaining in the tattoo would probably also be very different.
Tattoos are identified by microscopic examination showing ink particles embedded within dermal tissue layers, while post-mortem markings would only appear on the surface.
Inb4: not an expert but I do have some ink.
Tattoos are basically ink being delivered in the lower layers of skin by poking. They look vastly different depending on the healing process. I'd imagine the scientists can distinguish between pre and post mortem punctures pretty well. The amount of ink remaining in the tattoo would probably also be very different.
Tattoos are identified by microscopic examination showing ink particles embedded within dermal tissue layers, while post-mortem markings would only appear on the surface.