All > Technology > Programming > Java
A Subscriber Identity Module (SIM) is a stripped-down smart card containing information about the identity of a cell-phone subscriber, and subscriber authentication and service information. Because the SIM uniquely identifies the subscriber and is portable among handsets, the user can move it from one kind of phone to another, facilitating international roaming.
- Browse Related Terms: anonymous access, Basic authentication, certificate authority, client-certificate authentication, digest authentication, form-based authentication, keystore, mutual authentication, principal, public-key certificate, server certificate, SIM (Subscriber Identity Module), SSL, SSL (Secure Sockets Layer), user (security), user data constraint, WTLS (Wireless Transport Layer Security)