Multiple choice technology

Java Ring can be used for

  1. Starting the car

  2. Authentication

  3. Audit trails

  4. Adjusting room temperature
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation

Java Ring is a smart card technology that can be programmed for various applications. All listed uses are theoretically possible implementations - authentication (most common), audit trails (security logging), starting cars (ignition systems), and adjusting room temperature (smart home integration). The question asks what it CAN be used for, not just typical uses.

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