VPNs provide a way for people to get around internet roadblocks and censors, stream or download without worry, protect themselves from hackers, and keep their internet usage mostly private from third parties. They'll especially come in handy if providers like Comcast do decide to stop playing nice with Netflix, or if you're in a country where American Netflix is blocked.
Tunnel endpoints must be authenticated before secure VPN tunnels can be established. User-created remote-access VPNs may use passwords, biometrics, two-factor authentication or other cryptographic methods. Network-to-network tunnels often use passwords or digital certificates. They permanently store the key to allow the tunnel to establish automatically, without intervention from the administrator.
They even offer the most generous simultaneous connection count, with six simultaneous connections through their network, where everyone else offers five or fewer. NordVPN's network isn't as large as some of their competitors, so if you're trying to obfuscate your tracks, you might want a company with more servers. Otherwise, this company is clearly providing a winning offering.