A portkey

A friend and I have recently begun wondering about how to translate a certain term from an English book into Latin. More specifically, it’s the word “portkey”, created by the author of Harry Potter. In short, a “portkey” is a thing that can be used to instantly transport people from one place to another. However, we find it very difficult to come up with a Latin expression for this, especially because we’d like this Latin expression to be at least a tad catchy. I have a couple of attempts here. Please tell me if they are valid, and do contribute if you have any suggestions.

clavis portandi (key of transporting)
clavis portae (literally port key I guess)
clavis portans (key that transports)
clavis portanda (key that is to be transported)

As you see, it becomes increasingly difficult as the “port” in “portkey” can be regarded as both a verb and a noun.

Thanks!

Ricelius

Why don’t you just check how it is in the Latin Harry Potter, or has that one not come out yet?

Only the first installment has been published in Latin (I don’t even know if they’re planning on translating the other books). However, this word doesn’t appear till book iv.

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Since you’re expressing the purpose of the key, perhaps

clavis ad portandum

or something similar woud be appropriate.

Magistra