The Ledger Nano S connects to any computer via USB and embeds a secure OLED display to double-check and confirm each transaction with a single tap on its side buttons.
As of December 2017, Ledger Nano S and Ledger Blue natively support:
– Bitcoin Cash
– Bitcoin Gold
– Ethereum/ Ethereum Classic
– Neo (available soon for the Ledger Blue)
No anti-tampering sticker
This wallet was manufactured by Ledger in France and is factory-sealed. It does not contain any anti-tampering stickers on the packaging. Make sure you agree to this prior to purchase, per the official FAQ:
Why isn’t there any anti-tampering sticker on the Nano S box?
Ledger doesn’t attach any tamper proof seal on its boxes anymore as it is not useful. We used to put this grey sticker during a few months, long time ago, but it was a standard sticker, not a seal at all.
In your box, there is a card with a “Did you notice” title, explaining it. If for some reason you don’t have it anymore, you can read this blog post to understand why the best practice is not a seal – easy to fake or replace – but attestation to prove the authenticity of your device.