If someone signs my plastic iPhone cover with a sharpie, will it stay permenantly?

I'm going to P! Nks concert in about a month and I'm going to try and get her to sign my case with a sharpie… Just wondering would that stay or rub off/fade over time? Would it be better to get an actual 'permenant marker' ?

No it will create a void in space and time resulting in your iPhone exploding

It would fade over time you could get someone to spray a clearcoat of paint over it or try the super permanent markers

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