[stndef]

I see where you're coming from, but a prosthetic arm is someone's arm. Mentally it very quickly can become something you identify with, like a prosthetic arm basically being YOUR arm.

When you then have your prosthetic then being an advertisement, it can have an impact on your relationship with the device.

I don't want someone branding my arm and I can see why others would feel the same.

[Joker_vD]

> I don't want someone branding my arm

That's exactly the point of my analogy?

[stndef]

You're right -- I totally misread what you said. Sorry!

I think tattoo does imply more of a permanence and familiarity in regards to the relationship someone would have with a tattoo on a part of their body they're born with, but I do see your point as well.