If a Jewish person, for whatever reason lived alone/in isolation from other Jews/or was not known to many other Jews on his area, would it be permissible for such a person to have their burial wishes (taharah, no cremation, etc.) to be tattooed on their arm or chest? Is the potential of having a county coroner perform unlawful procedures on their body, etc. be enough to override the prohibition on tattooing the body? Why or why not?
[NOTE: I am envisioning a case with an older person who might have such a fear of passing away suddenly.]