A user equipment. The user equipment comprises a processor, a memory, a trusted security zone, wherein the trusted security zone provides hardware assisted trust, a ticket generator stored in the trusted security zone to generate a plurality of access codes, and a code generator stored in the trusted security zone. The code generator generates a different one-time-password for each of the plurality of access codes, wherein the one-time-password is not displayed on the user equipment, stores the one-time-password in the trusted security zone, and transmits the one-time-password to a trusted server through a trusted channel. Responsive to an associated access code from the plurality of access codes being displayed and upon request of a user of the user equipment, the code generator displays the one-time-password and invalidates the one-time-password promptly after the display ends.