Ice Cream Sandwich Advanced Security Features
Android Ice Cream Sandwich hides many new security features under its shiny exterior. The native email app supports EAS v14 and EAS certificate authentication, provides Allow/Block/Quarantine (ABQ) strings for device type and mode, and allows the disabling of automatic sync during roaming. Face Unlock turns your own face into your password.
Apps can store and retrieve private keys and their corresponding certificate chains for better credentials management via a new keychain API and encrypted storage.
A built-in VPN client provides access to L2TP and IPSec protocols. And a new VPN API and secure credential storage give applications access to configure addresses and routing rules, process outgoing and incoming packets and establish secure tunnels to a remote server.