Body piercing for earrings, belly button rings, etc by needle is very crude. It is painful, long to heal, and subject to infection. Better by far would be an instant, sterile, cauterized pierce by laser. Surgeons have the tools now. It is simply an new use of existing technology. You might argue that body decoration is stupid and should be kept in the dark ages. That is silly. It is going to happen no matter what, just like other body augmentations and re-configurations. The effort should be made to mitigate the harm.
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As long as we're going into this type of stuff (which doesn't particularly fascinate me), instead of inserting a specific type of jewelry, why not put in an eyelet which can accept a variety of exchangeable pieces for different occasions with less opportunity for tissue damage when exchanging pieces? Also a small magnet or magnetic material would permit different pieces to be used.
This reminds me of an idea I had some years back when working with PostScript Imagesetters that created high resolution images on film for use in commercial printing. They used a laser to image PostScript files (from Quark Xpress, Adobe Photoshop, etc) to film at 1200 to 2400 dots per inch (dpi). Why not take this technology and use it to create a device that could take any image (converted into PostScript format) and laser burn it into the skin as a form of decorative body scarring. I think you'd find a huge market for this as even tattooing seems to be too ubiquitous for those who feel they have to make sure everyone knows they are an individual.
Similar to the laser tattoos in the movie 'Starship Troopers'
I wish this were workable, but I foresee these objections:1. Expense--a fairly powerful laser would be needed.2. "Overshoot" would be dangerous and harder to shield against.3. Pain: burning might feel worse than piercing.4. Flinching would cause misalignment, unlike a needle, which stays on course once it's been started.