OAN proprietary authorization credentials
OAN/Aion has its own unique auth (the access key) which is why we didn't add our auth on top of it.
The shared node can't use auth as there are multiple people using the node and you wouldn't be the sole users of it, even if there was auth
If there are concerned about who is accessing, the dedicated node is probably the better option. Again, there is no auth in the URL (like pub) because the access token already exists with OAN/Aion.
It's likely once our aion shared node stops also being the default connection for the OAN wallet, we'll probably add auth to it.
For those that are cost-conscious or don't need access to the network all the time - only on occasion to use the wallet, etc... the shared node is the better option.