Systems and methods for providing mobile device security are disclosed. In some implementations, a request for access to a security mechanism is received at a user terminal. A short-range radio connection of the user terminal at a time of receiving the request for access is identified responsive to the request. A memory of the user terminal is accessed to determine whether the identified short-range radio connection corresponds to a user-identified secure radio connection. Upon determining that the radio connection corresponds to the user-identified secure radio connection, the user is granted access to the security mechanism without soliciting the user of the user terminal for a predetermined security input. Upon determining that the radio connection does not correspond to the user-identified secure radio connection, the user is solicited for the predetermined security input.