1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, toxicity and dog-whistling are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com.
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.
6) No US Politics.
Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !uspolitics@lemmy.world
7) No Hit-and-Run questions.
Please don't delete your post for no apparent reason. If you plan on deleting a question later, say so in the post, or if you feel that you have a good reason to remove it, message a mod beforehand. It's not fair to the ones who took their time to answer, and it's not in the spirit of the community.
Reminder: The terms of service apply here too.
Logo design credit goes to: tubbadu
Hindsight is 20/20 and I realize this probably wasn't the best idea to begin with....
(Scott Kirkland, if you were wondering..)
I studied paper conservation so this is technically out of my wheelhouse. But while I was doing my MA we had an external tutor come in and demonstrate how to conserve various synthetic paints. The problem you're having is the pigment has become friable as the solvent has evaporated. It may be possible to replace some of that lost solvent by exposing the signature to the right solvent in a gas chamber (stuff that you should leave to a professional conservator that works in this medium). The signature will still be susceptible to being abraded off so a cover would be needed. Preferably one that doesn't contact the signature.
Professional conservation work is not cheap so you'd need to get a quote and judge if it is worth it to you.
It looks like the solvent from the ink has stained the case which will be more permanent than the friable pigment. You could just accept that the pigment is going to fall off and live with the signature's underlying stain (though you'd still probably be wise to put a clear case on the phone to reduce the abrasion caused by handing and pocket storage). Be aware that the stain may become less recognisable with age (like an old tattoo) as the solvent spreads on the case.
If you are keen to try to fix it yourself the most important thing to do is get your hands on the exact same marker and a similar substrate as the phone body to test any proposed solutions. Give any test time to show itself. I relabeled thousands of books in an archive with a permanent archival pen then put adhesive clear covers over them, after five years none of those labels are readable anymore as the solvent in the adhesive made the ink spread. They were fine while I still worked there but I was getting some stink eye when I paid visit those five years later.