At the network level, no: your NymVPN devices are indistinguishable from any other device on the network. At the account level we know which devices are on your subscription, only to enforce the 10-device limit, but nothing you do is ever correlated between them. Your traffic stays unlinkable across devices, even on one account.
Two layers, two answers
Network layer: not linked
Each device connects by presenting a zk-nym credential that proves it's entitled to connect and nothing else: not your account, not your other devices, not your identity. To the servers, mix nodes, and any observer, your devices look identical to everyone else's. So even with all 10 connected at once, no server can tell two connections share an account, no mix node can correlate traffic across them, and no observer can fingerprint a pattern across your devices.
Account layer: linked only to count devices
To enforce the 10-device limit, our systems track how many active devices an account has. That's the only device-to-account link, and even there, device identifiers are anonymized random monikers (no OS, MAC, or IP), no activity is correlated, and no content is stored. The account layer never sees your traffic.
What this means in practice
- Run NymVPN on your phone, laptop, and a friend's computer on your code, and no observer can tell those connections are one person.
- Different devices can run different modes, one Fast, one Anonymous, without that leaking.
- Different devices can pick different server countries without being linked at the network layer.
What Nym doesn't store
The account layer holds only your anonymous account ID (n1...), anonymized device IDs, and the payment data required by law (date, amount, processor, currency). It does not store your IP, the sites you visit, your traffic patterns, which servers you connect to, or any link between your devices and what they do. For the full list see How can I delete my NymVPN account? and How does NymVPN handle user data and logging?
Related questions
If I sign out of a device, what happens?
It's removed from your active-device count, freeing a slot. Your access code stays valid, so you can sign back in anytime.
Can someone with my access code see my other devices?
They'd see a device slot is used, but the anonymized IDs reveal nothing about those devices, and your traffic privacy holds regardless.