[idlewords]

Safest thing to do is tattoo it on the inside of your cheek

[lorax]

Only if you trust your dentist (or your proctologist, depending on which cheek you were referring to).

[idlewords]

Don't trust either of them with the whole thing; have them meet in the middle.

[activiation]

I heard that tattoos inside your mouth don't last super long, not sure if it's true though.

[_Algernon_]

Only if you kill the tattoo artist after.

[lionkor]

Sounds a lot easier than properly securing my home network